Rocket Lab launches three research satellites for U.S. Air Force – Satellite News Digest
Rocket: Electron; Payload: STP-27RD mission; Date: 5 May 2019, 0600 UTC; Launch site: Mahia Peninsula, New Zealand. Approximately 54 minutes after lift-off, the Electron launch vehicle’s Kick Stage successfully deployed the three payloads to their designated orbits. http://www.sat-nd.com/archive/?id=2019050501