Lockheed Martin
| United States of America
Cape Canaveral SFS, FL, USA June 16, 1966, 2 p.m.
Status: Launch Successful
Mission:
The IDCSP (Initial Defense Communications satellite Program) provided the Pentagon with its first near-geosynchronous communications system and replaced the cancelled ADVENT project.
Vought
| United States of America
Wallops Flight Facility, Virginia, USA June 10, 1966, 4:15 a.m.
Status: Launch Successful
Mission:
The OV3 (Orbiting Vehicle 3) series were experimental satellites based on an octagonal bus structure. These were the only in the OV series launched on dedicated launchers.