3rd Radio Research Unit Rru Wo Txt Baseball T-Shirts

The 3rd Radio Research Unit (Detachment) were among the earliest U.S. military advisors in Vietnam; 3rd RRU later grew to become the 509th Radio Research Group These occupations, which required a top secret clearance with Special Intelligence/crypto special clearances, were essential to U.S. Cold War efforts. ASA units usually operated in four groups using revolving shifts to provide coverage twenty-four hours a day, seven days a week.

The 3rd Radio Researchd Unit (Detachment) were among the earliest U.S. military advisors in Vietnam; 3rd RRU later grew to become the 509th Radio Research Group These occupations, which required a top secret clearance with Special Intelligence/crypto special clearances, were essential to U.S. Cold War efforts. ASA units usually operated in four groups using revolving shifts to provide coverage twenty-four hours a day, seven days a week.

The 3rd RRU was located at Tan Son Nhut Airbase in RSVN. Republic of South Vietnam.