Air Force officials have begun test transmissions of the new L-5 safety-of-life navigation signal from the newest Global Positioning System satellite as part of the satellite’s on-orbit checkout phase. The Air Force launched this satellite into space on May 27. It is the first in the Boeing-built Block IIF series. Among its features is the L-5 signal for civil pilots. The initial test transmissions of L-5 began June 5 and will take place intermittently during the satellite’s three-month phase of on-orbit testing. All Block IIF spacecraft will transmit L-5, as will future GPS Block III satellites. (Los Angeles release)
If the Air Force is in line for a big budget bump from President Donald Trump’s proposed $1.5 trillion defense budget in 2027, the head of Air Combat Command said he would make aircraft spare parts his top spending priority—but cautioned that more money to buy parts won’t equal a…


