On May 24, Inside Defense reported that the U.S. Defense Department is preparing a stop-work order on the Ground-based Midcourse Defense System’s Redesigned Kill Vehicle (RKV). The report comes after unspecified concerns over recent component tests, which motivated the MDA to delay the program by 2 years in March 2019. As of February 2019, the MDA has consumed roughly $672 million of the $1 billion contract for RKV development. Under Secretary of Defense for Research and Engineering Michael Griffin has reportedly directed an analysis of alternatives for modernizing the Ground-based Midcourse Defense System’s kill vehicles.