Drill Sequence Marine Corps 1st Lt. Kelsey M. Hastings conducts a drill sequence as part of her final evaluation at Marine Barracks Washington’s Ceremonial Drill School in Washington, D.C., Feb. 3, 2021. The three-week course prepares barracks officers and staff noncommissioned officers for the unit's rigorous ceremonial mission. Marines are evaluated on the fundamentals of marching, sword manual, voice commands and uniform preparation. SHARE: Download: Full Size (1.31 MB) Tags: marine corps Credit: Marine Corps VIRIN: 210203-M-D0439-073.JPG Photo Gallery