U.S. Army ground radar technicians operate an AN/PPS-5 combat surveillance radar system. 1 Jun 1979 (Photo DVIC)

U.S. Army ground radar technicians operate an AN/PPS-5 combat surveillance radar systems. 1 Jun 1979 (Photo DVIC)

US Army ground radar technicians operate an AN/PPS-5 combat surveillance radar system. 1 Jun 1979 (Photo DVIC)