(From the Squadron supplier): The 121st Fighter Squadron (121 FS) is a unit of the District of Columbia Air National Guard (DC ANG) 113th Wing located at Joint Base Andrews, Camp Springs, MD. The 121st is equipped with the Block 30 F-16C/D Fighting Falcon. This is the white version of the crest patch created for their “DETACHMENT ONE” showing the White House in the background. This patch does not have velcro attached.