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All the Sisters and All the Brothers

Spence Dry: A SEAL's Story

Problems began soon after the helicopter arrived near the Grayback 's expected position. Multiple passes failed to reveal the submarine. To complicate matters, Dry could not communicate directly with the helicopter's pilot. Only the crew chief, Petty Officer First Class John L. Wilson, and Lieutenant Commander Edwin L. Towers, a Seventh Fleet staff officer temporarily assigned to the operation, were linked through the helicopter's internal communications from the cabin to the pilots in the cockpit.

The platoon practiced locking-in/locking-out of the submerged Grayback (in background at periscope depth) during the brief run-up to the mission to rescue escaping American POWs. Lieutenant Robert J. Conger Jr., the platoon's assistant officer-in-charge (second from right, bearded and smiling) rests on the inflatable boat.

As the aircrew desperately searched for the Grayback 's beacon, Dry and his men prepared to enter the water and lock-in to the submerged submarine. Several approaches were aborted when it proved impossible to confirm the submarine's presence. At one point the helicopter inadvertently passed over the surf line and flew over North Vietnam when the crew mistook lights from a dwelling for the submarine. "It was a very hair-raising night," Wilson remembered.

During another difficult approach to the intermittent light just prior to the helicopter's last pass, the pilot overshot, flared the helicopter to dissipate airspeed as he transitioned to a hover, and then backed down toward the light. He descended within ten feet of the surface in a tail-down attitude. Water splashed into the cabin and almost swamped the helicopter before the pilot, warned by his crew chief, waved off for another try.

In near-desperation Wilson passed his helmet (with its lip microphone) to Dry so he could talk directly to the pilot about his concerns with the helicopter's altitude and speed. Dry and Martin had ample reason to worry.

According to a post-mission assessment, Dry informed the helicopter crew that they were too high, too fast, and downwind. Specifically, they were approaching the drop point with the winds, estimated at 15 to 20 knots, on the helicopter's tail. The velocity of the tail wind, added to the helicopter's forward speed, was well beyond the 20-knot ground speed needed for a safe jump. "They wanted us out, and we felt the altitude was too high and the speed too fast," recalled Martin, an experienced parachute jumpmaster. "As drop-master, I was looking for the tell-tale signs of spray from the helo—either coming in the door or when I looked toward the rear and below the helo."

Mindful of the helicopter's fuel state, Dry told Martin that time was running out—they needed to return to the submarine. "I remember seeing Spence's face in the dim red helo light," Martin said. "His last words to me were, 'We've got to get back to Grayback .'"

Finally, the helicopter crew observed a flashing light and assumed they had sighted the submarine's beacon. The pilot, not trusting the helicopter's automatic stabilization equipment, made a manual approach and, as he neared a hover, called, "Drop, drop, drop." "It was dark and windy," Martin said, "but I could see the helo's sea spray, especially on the dark sea surface."

Wilson, a veteran combat search-and-rescue diver with 29 career rescues to his credit when he retired as a chief petty officer, slapped Dry on the shoulder—the signal to jump. The final decision rested with Dry, but there was no hesitation. He dropped from the helicopter into the darkness, followed in quick succession by his three team members as the helicopter began to gain altitude and airspeed. "I knew right away that we were too high and too fast," Wilson related, "but it was too late."

"I was third in the drop," Martin said. "I exited and counted—one thousand, two thousand, three thousand . . . followed by 'God dammit,' and then I hit the water. I believe by my count that I was over 50 feet, possibly even 60 feet." Again, according to Martin, the cast was conducted downwind, adding another 15 to 20 knots of forward velocity when the jumpers hit the water.

Following their aborted SDV surveillance mission on the night of 3 June, Dry and other members of his platoon were rescued by an HH-3A "Big Mother" assigned to Helicopter Combat support Squadron (HC)-7. The same helicopter transported the men from the nuclear-powered guided-missile cruiser USS Long Beach for their fateful night "cast" into high winds and a choppy sea as they attempted to rejoin the Grayback.

The chief of naval operations told Captain Dry that his son had exited the helicopter at about 35 feet, but the survivors have no doubt that the helicopter was much higher. "A combination of too much speed and altitude [did] not allow any jumper to get a proper body position to enter the water. All four of us were injured," Martin related.

Dry died immediately of "severe trauma to the neck" caused by impact with the water, according to the Navy's death report. Two other team members were badly shaken, and one was seriously injured. Martin and Lutz answered one another's call, but there was no reply from their other teammates. Martin set out to find them. Edwards had broken a rib and was semi-conscious when Martin found him and inflated his life vest. Visibility in the water was later estimated at 10 feet, but the SEALs said it was closer to zero in the muddy water off the enemy's coast.

There was no response to their calls for Dry, although they estimated they were only 15 to 20 yards apart on their cast.

Worse, the flashing lights detected by the helicopter crew were not on the Grayback; in fact, they were the emergency flares and strobe lights used by the crew of the second SDV to alert the incoming helicopter to their own predicament.

Unknown to the pilots and the SEALs on Dry's helicopter before their drop, the Grayback had launched its second vehicle several hours earlier for abbreviated requalification launch-and-recovery operations. According to Chamberlain, the vehicle was to remain within acoustic homing beacon range of the submarine so that it could return as desired. Upon launch, however, it foundered in approximately 60 feet of water. Eventually, its crew of four abandoned it when their air ran out; subsequently, they made an emergency free ascent to the surface.

Chamberlain, with radar contacts indicating North Vietnamese patrol boats, had radioed to abort the night drop, but his message arrived too late.

Martin, Lutz, and Edwards saw a strobe light, heard voices, and swam to the second SDV's team. The group drifted with the seas. About 1 a.m., they found Dry's lifeless body, inflated his life vest, and held him and Edwards in tow as they swam seaward to be rescued.

The North Vietnamese patrol boats in the area did not detect them, and an HC-7 helicopter alerted by Chamberlain rescued the men at dawn and returned them to the L ong Beach . Dry's body and the seriously injured Edwards were then flown to the carrier USS Kitty Hawk (CV-63).

The Grayback remained on station in the shallow waters for an additional two days—relying on periscope sightings to detect any escaping POWs—before Chamberlain was ordered to a safer patrol area. The remaining six members of the mission later were transferred from the Long Beach to the submarine on 12 June. With the likelihood of a successful prisoner escape by sea lessened by the recent U.S. mining of North Vietnam's ports and rivers, Operation Thunderhead was soon terminated.

A Father's Quest

Dry was the last SEAL killed during the Vietnam War. As it turned out, the leadership at the Hanoi Hilton had called off the escape attempt over concern for the plan's risk and fear of retribution. Unfortunately, there was no way of quickly informing anyone outside the prison walls about this decision. Those assigned to detect and recover the fleeing Americans continued to dedicate themselves to their rescue.

In Scotland, Dry's parents were notified on 12 June of their son's death in a "training operation," the government's cover story for the secret mission. Captain Dry's diary entry the following day consisted of one word: "Desolation." His son's remains were returned to the United States, and he was buried at Arlington National Cemetery with full military honors on 22 June. Admiral Bernard Clarey, the U.S. Pacific Fleet commander, met with Captain Dry in the Pentagon and explained the mission in a general way.

The operation's cover story did not ring true as news of the mission slowly filtered back to Coronado. Like the men of SEAL Team One, Captain Dry also was dissatisfied with the Navy's explanation. Over the next 25 years he sought, in vain, to induce the Navy and the Naval Academy to recognize his son's sacrifice.

The Navy did not share the findings of its 1972 joint investigation. "In nearly five years I've been given no information about exactly what happened at the scene of the accident," he wrote five years later. Finally, the Grayback 's commanding officer, in a personal letter to Dry in 1981, provided a fuller accounting of his son's death. Others in the Navy who served with his son also filled in additional details through the years.

With the exception of an "end-of-tour" Navy Commendation Medal awarded to Lieutenant Conger, it appears that no member of Dry's team was decorated or otherwise recognized for their actions during the daring rescue mission—not even Warrant Officer First Class Martin, who saved the life of the seriously injured member of his team and rallied the remaining survivors until their rescue. Captain Dry's attempts to have his son awarded a posthumous Purple Heart were denied by the Department of the Navy, which maintained his loss was not the result of enemy action.

Lieutenant Dry's father, Captain Melvin H. Dry, U.S. Navy (Retired), devoted the final 25 years of his life to uncovering the facts about his son's death and urging the Navy to honor his son's sacrifice. The pair share a common grave at Arlington National Cemetery—the father's dolphins and the son's SEAL Trident cut into the headstone.


Similar requests to the Naval Academy during the 1990s to recognize the younger Dry's combat death also were unsuccessful, despite interest by former Secretary of the Navy James H. Webb Jr., one of Dry's Academy classmates. "The naval service is rightly stringent in awarding the Purple Heart and in assigning the status of killed in action," Webb wrote in the Naval Academy's Alumni Association's magazine in 1999. "But in the complicated world in which we have lived since the end of World War II, many who perished during operational missions, directly related to national defense, paid a price that was clearly measurable in the Cold War's victory."

The Naval Academy did not include Spence Dry's name on a listing of its alumni killed in action displayed in Memorial Hall owing to the Navy's initial determination of his death as an operational accident. "In order to be listed on that memorial," the Academy's Alumni Association said, "the Secretary of the Navy must have designated the individual KIA [killed in action] on the casualty report. Lt. Dry was not noted in this category."

Dry's leadership and dedication remain unrecognized by the Navy, although those most familiar with his loss have no doubts regarding his leadership and heroism that night. Ten days after the fateful night cast, all 13 surviving men of the platoon signed a joint letter to Captain Dry honoring their fallen commander. They wrote that ". . . His memory will remain with us so long as man values positive leadership and courage in the face of danger."

Captain Dry died in 1997. By then, he knew most of the details surrounding his son's death, but his quest to have the Navy honor his son's wartime sacrifice went unfulfilled. Father and son are buried in a common grave in Arlington National Cemetery. Captain Dry's dolphins are engraved on the top of the tombstone's face; his son's SEAL insignia is engraved at the bottom.


On 4 June 2004, the Naval Academy dedicated its renovated Memorial Hall, where the names of more than 2,500 graduates killed during operations "while forward deployed, training, or preparing to deploy" are now listed on 44 panels. The Class of 1968's plaque, with Spence Dry's name, is located just to the left of the display naming those alumni killed in action with the enemy. In December 2004, the Naval Academy Foundation confirmed that Spence Dry would be recognized as an operational loss during the Vietnam War. His name will be included on the Academy's Vietnam Memorial when it is renovated in 2005.

Authors' Notes

The authors interviewed mission participants and relied upon several published accounts of Operation Thunderhead in the preparation of this article, including George J. Veith's Code-Name Bright Light, The Untold Story of U.S. POW Rescue Efforts During the Vietnam War (New York: The Free Press, 1998), pp. 328-329. Veith provides a meticulously researched, well-annotated, and comprehensive summary of POW escape attempts and rescue missions during the Vietnam War. The most complete first-hand account, Operation Thunderhead , was published in 1981 (La Jolla, Calif.: Lane & Associates). It was written by Lt. Cdr. Edwin L. Towers, a U.S. Seventh Fleet staff officer assigned to the mission and present with Dry the night he died. Orr Kelly's Brave Men, Dark Waters: The Untold Story of the Navy SEALs (Novato, Calif.: Presidio Press, 1992) also describes the operation. Kevin Dockery devotes a chapter to the mission in Free Fire Zones: The True Story of U.S. Navy SEAL Combat in Vietnam (New York: Harpertorch, 2000).

We also interviewed Spence Dry's brother, Robert W. Dry, in June 2004. He gave us access to his father's records on Spence Dry's Navy career and his death during Operation Thunderhead, which are preserved in two large binders containing copies of his personal correspondence, letters from mission participants, declassified Navy message traffic, and published accounts relating to the operation. They provided valuable original-source information for this account of his brother's death.

Additional information came by e-mail to the authors from Richard C. Hetzell on 3 August 2004, and from a letter to Capt. M.H. Dry from Lt. Robert W. Conger Jr., of 16 June 1972, signed by all members of Lt. Dry's platoon. In addition to Conger, the platoon consisted of Philip L. Martin, Samuel E. Birky, Timothy R. Reeves, Richard C. Hetzell, Eric A. Knudson, Robert M. Hooke, Frank Sayle, David Ray Hankins, John M. Davis, Michael J. Shortell, Barry S. Steele, and William B. Wheeler.

We reviewed a naval message from Admiral John S. McCain Jr., Commander-in-Chief, Pacific, to Admiral Bernard Clarey, Commander-in-Chief, U.S. Pacific Fleet (date/time group 160112Z May 1972), in the Library of Congress (LOC) Public Document Section (PDS) LC 92/302 reel 61. Interestingly, Capt. M.H. Dry had served as McCain's executive officer when the latter officer commanded the submarine USS Gunnel (SS-253) during World War II.

Several of the SEALs and UDT operators assigned to Operation Thunderhead felt that an overemphasis on operational security constrained their ability to plan and execute their special-warfare mission tactically. More experienced but lower-ranking SDV pilots, for example, were not fully briefed on the mission nor consulted during tactical mission planning. (Interview with Col. Samuel E. Birky, U.S. Army, Fort Bragg, N.C., 23 July 2004, and information in e-mails to the authors from Richard Hetzell, 3 August 2004,  Thomas Edwards, 19 June 2005, and John Lutz, 21 June 2005.)

Lt. Philip L. “Moki” Martin corresponded with Captain Dry and was most helpful to the authors, as was Captain John D. Chamberlain, U.S. Navy (Retired). Lutz, the pilot of the SDV, also qualified his confidence in the craft. From his perspective the best one could expect from the Mark VII was to “… aim, go, and look.” The SDV was launched at the end of floodtide. As an aid to navigation most of the transit to the target was made on the surface at a 15-degree, bow-up attitude. As a result the SDV could only make three knots and, while contending with strong currents, was forced off course. With the SDV's battery power depleting more rapidly than normal, the crew was forced to turn back prior to reaching their objective—but too late to reach the Grayback before power ran out.

ADJC John L. Wilson, the helicopter crew chief, provided numerous insights on the mission. Lutz, the second man to jump from the helicopter, also counted to four before hitting the water. The impact broke his web belt buckle. He believes the altitude of the drop was at least 50 feet.  Edwards, the last man to jump, counted to four before hitting the water. In addition to breaking his ribs, the impact split his wet suit open and tore off his web belt. He remained unconscious for three hours and probably would have drowned if Martin had not found him.

According to the SDV's UDT operators, Edwards and Lutz, the sub's launch-and-recovery team reportedly directed the second SDV crew to add ballast prior to the launch to compensate for the strong current across the Grayback 's deck. Following its launch, the SDV immediately sank to the bottom. The craft's purge pumps were unable to deal with the water-head pressure to bring the SDV back to operating depth. (E-mails to the authors from Edwards and Lutz in June 2005)

We also studied a naval message from CTU 78.12 to Commander, Seventh Fleet, DTG 060201Z Jun 1972, LOC PDS LC 92/302 reel 61 and received information from Edwin L. Towers on 16 February 2005.

We interviewed Col. Samuel E. Birky, U.S. Army, Fort Bragg, N.C. on 23 July 2004. Birky, a SEAL petty officer at the time of Operation Thunderhead, was firmly resolved not to be captured during the time he drifted alone—mindful that no SEAL has ever been captured or left behind by his teammates, whether killed or wounded, regardless of the intensity of enemy fire or numerical superiority during combat operations. In addition to Birky, the other occupants of the second SDV were Steve McConnell, the SDV driver, Lt. Bob Conger, and Lt. (j.g.) Tom McGrath.

Dry's body was flown first to Da Nang and then to a U.S. Army mortuary at Tan Son Nhut Airbase in Saigon. There, it fell to another Naval Academy classmate, Lt. Benjamin F. Burgess III, to identify Dry's remains. Burgess, an admiral's aide and flag lieutenant stationed in Saigon, was one of Dry's closest friends at the Academy.

A letter to Captain Dry from Capt. M.A. Horn, Commander Submarine Flotilla Seven, 10 June 1972, stated the official cause of death. In July 1972, Capt. Dry was provided a copy of the Navy's death certificate stating his son died June 6, 1972, “on board USS Grayback (LPSS-574) as a result of injuries sustained in an operational accident.”

Former Secretary of the Navy James H. Webb Jr., addressed the incident in  “Are Enough Names Enshrined in Memorial Hall,” Shipmate , March 1999, p. 15.

Others who were familiar with the circumstances surrounding Dry's death share similar views on his heroism. Lt. Cdr. Towers, the Seventh Fleet staff officer assigned to Operation Thunderhead and present in the helicopter on the night of Dry's death, dedicated his 1981 account of the abortive rescue attempt to the young SEAL. “His love of country and his commitment to the cause that those in captivity might have hope for freedom cost him his life,” he wrote. In a letter to Capt. Dry in 1982, the Grayback 's commanding officer said, “Your son died a hero to those who knew him; a deeply respected man with a superb professional reputation.” In his June 27, 1972 letter of condolence to Dry's parents, the chief of naval operations, commenting on their son's efforts to preserve liberty and freedom in South Vietnam, wrote, “Your son was one of those heroic Americans who answered that call.” Petty Officer Richard C. Hetzell said that Dry was, “… one of the best officers that the SEAL team ever had.” Hetzell, one of the most experienced combat veterans in Dry's platoon's stated, “Spence was a great leader and a friend, and I would have followed him to the gates of hell if he had asked me to.”

Captain Slattery, a naval special warfare officer and Vietnam combat veteran, teaches history and government at Campbell University in Buies Creek, North Carolina. Captain Peterson, a naval aviator and also a Vietnam veteran, is a senior technical director with the Anteon Corporation's Center for Security Strategies and Operations and the North America editor of Naval Forces magazine.

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