The first national security launch for the U.S. Space Force and the final satellite to build out the protected communications constellation is now connected.

The sixth Lockheed Martin-built Advanced Extremely High Frequency (AEHF-6) satellite launched from Cape Canaveral Air Force Station in Florida at 4:18 p.m. ET. on March 26. AEHF-6 successfully separated from its United Launch Alliance Atlas V 551 rocket approximately five hours and 45 minutes after launch and is now responding to commands from ground control.

“This is a great milestone to share with the U.S. Space Force’s Space and Missiles Systems Center,” said Vice President for Protected Communications at Lockheed Martin Space, Mike Cacheiro. "I am incredibly proud of the teams that made this happen over the many years supporting the program. It is a bittersweet moment and I look forward to working with the Space Force to continue deliver this system on orbit, and increase our nation's overall survivable and protected.”

The AEHF-6 satellite adds increased resiliency and advanced capabilities to the AEHF-MILSTAR constellation which ensures the ability to transmit data anywhere, anytime. This marks the first launch under U.S. Space Force control.

AEHF-6 is part of the protected communications network providing global, survivable, protected communications capabilities for national leaders and tactical warfighters operating across ground, sea and air platforms.

AEHF-5, launched in 2019 and recently handed over for operations, formed the global, anti-jam system, which is an asset shared by international allies to include Canada, the Netherlands, U.K. and Australia.

Lockheed Martin developed and manufactured all six satellites at their production facility located in Sunnyvale, Calif. The satellite shipped to Cape Canaveral Air Force Station on a Super Galaxy C-5 aircraft from the 60th Air Mobility Wing at Travis Air Force Base.

Lockheed Martin is the prime contractor for the AEHF system, and the AEHF team is led by the Production Corps, Medium Earth Orbit Division, at the Space Force's Space and Missile Systems Center, at Los Angeles Air Force Base.