Marking A Drop Zone Air Force Senior Airman Steven Sirois, left, and Tech. Sgt. Taylor Schoen throw signal smoke flares to mark a drop zone during survival, evasion, resistance and escape training at Rosecrans Air National Guard Base in St. Joseph, Mo., Sept. 29, 2016. Sirois and Schoen are assigned to the Missouri Air National Guard’s 180th Airlift Squadron. Air Force National Guard photo by Senior Airman Patrick P. Evenson SHARE: Download: Full Size (2.1 MB) Tags: Guard, Air Force, training, Airmen Credit: Senior Airman Patrick Evenson VIRIN: 160930-Z-YI114-171A.JPG Photo Gallery