Six satellites built in France for OneWeb are set for blastoff Wednesday from French Guiana, the first of at least 21 launches using Russian-made Soyuz rockets to haul more than 600 of the refrigerator-sized craft to orbit for global broadband service.

Propelled by five strap-on solid rocket boosters and a Russian-made kerosene-fueled RD-180 main engine, a United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral Air Force Station on March 26 with the U.S. military’s sixth AEHF communications satellite.

NOAA’s next geostationary weather satellite, GOES-S, was raised on top of an Atlas 5 launcher Friday at Cape Canaveral in preparation for liftoff March 1 to keep watch over the Pacific Ocean and the Western United States.