EntityQ19563176· pop 6· linked from 15 articlesLong Range Strike BomberSign in to saveUS Air Force program in support of Northrop Grumman B-21 Raider developmentConnectionsNorthrop Grumman B-21 RaiderConceptunmanned aerial vehicleEntityNorthrop B-2 SpiritConceptBoeing B-52 StratofortressConceptUnited States Secretary of the Air ForceEntityrequest for proposalEntityNext-Generation BomberEntityNATOConceptInternational Standard Book NumberEntityWayback MachineEntityForbesEntityBoeingPublic companyInternational Standard Serial NumberEntityReutersEntityUnited States Air ForceEntityThe Wall Street JournalEntityLockheed Martin F-22 RaptorEntityLockheed Martin F-35 Lightning IIConceptthermonuclear weaponEntityLockheed MartinEntityCategoriesMilitary aircraft procurement programs of the United States