Here are the top 10 military traditions that need a lot of explaining to your civilian family members.
120mm Expeditionary Fire Support System
The Expeditionary Fire Support System (EFSS) was developed in response to the US Marine Corps' (USMC's) need for a fire support system that is lighter, more mobile and vertically transportable for missions requiring tactical versatility, speed and close-in fire support. The EFSS expands the maneuver commander's choices of fire-support capability against an array of targets including light-armored, motorized, and dismounted personnel; command and control systems; and indirect fire systems. The system's Prime Mover vehicle along with the 120mm towed rifled mortar is designed to be internally transportable in the MV-22 Osprey, CH-53, C-130 and the C-5 aircraft. The Expeditionary Fire Support System is comprised of a Prime Mover vehicle, 120mm towed rifle mortar weapon, a family of Insensitive Munitions (IM) compliant ammunition and the ammunition trailer.