The 121st Fighter Squadron (121 FS) is a unit of the District of Columbia ANG / 113th Wing located at Joint Base Andrews, Camp Springs, MD. The 121st is equipped with the Block 30 F-16C/D Fighting Falcon. The squadron is a descendant organization of the 121st Observation Squadron, established on 10 July 1940. It is one of the 29 original National Guard Observation Squadrons of the United States Army National Guard formed before World War II. This is the “TOP GUN GPSTN!” patch showing a skeleton with two 6-guns blazing and two F-16s in the background. This patch does not have velcro.