Operating under a veil of secrecy pierced only by the ignition of the rocket’s engines, Rocket Lab launched the first suborbital Electron June 17.

Operating under a veil of secrecy pierced only by the ignition of the rocket’s engines, Rocket Lab launched the first suborbital variant of its Electron vehicle June 17.

The vehicle, called Hypersonic Accelerator Suborbital Test Electron (HASTE), lifted off from Launch Complex 2 at the Mid-Atlantic Regional Spaceport on Wallops Island, Virginia, at 9:24 p.m. Eastern. Rocket Lab declared the launch a success in a statement nearly an hour and a half after liftoff.