Corporal Joeseph Senf, a Weapons Company member with

Corporal Joeseph Senf, a Weapons Company member with 2nd Battalion, 6th Marine Regiment and native of Syracuse, N.Y., descends the rappel tower during the Helicopter Ropes Suspension Techniques course taught by Expeditionary Operations Training Group March 3, 2015, at Stone Bay aboard Marine Corps Base Camp Lejeune, N.C. The 10-day course teaches Marines to become subject-matter experts at controlling fast-rope or rappelling exercises and units with HRST capabilities make it possible to insert or extract Marines from an area where landing an aircraft would be impractical. (Marine Corps photo by Cpl. Michelle Reif/released)