The National Reconnaissance Office launched new spy satellites into lower Earth orbit late Thursday, adding to the growing constellation of such U.S.-based intelligence-gathering satellites around the world.

The launch marks the seventh deployment in the NRO’s new “proliferated architecture” strategy, which emphasizes smaller, distributed satellite networks

This Friday, launch spectators gathered at Port Canaveral’s Jetty Park to see SpaceX’s fourth launch of the year from Florida’s Space Coast.