A drug investigation at the U.S. Naval Academy could result in a court-martial of a midshipman, the superintendent said.
The U.S. and Mexico are sparring over immigration and trade, but the two countries are joining forces on the high seas.
The U.S. Coast Guard offloaded roughly 36,000 pounds of cocaine into a California pier on Tuesday.
An academy spokesman says the illicit drugs in question are cocaine, ecstasy, ketamine and hallucinogenic mushrooms.
Kyle Anthony Shephard, 25, of San Marcos, is charged with distribution of fentanyl resulting in death.
A drug-dealing sailor lost her appeal and will be dishonorably discharged from the military.
No formal charges have been brought against the midshipmen during the probe, which began nearly three months ago.
Officials have been investigating the allegations for 2 1/2 months, a spokesman said.
The drugs have a wholesale value of about $190 million and were seized by five different Coast Guard crews.
The sailors, some assigned to the carrier Ronald Reagan, are suspected of buying, selling and using illegal drugs.