Commanders have until Feb. 21 to review their units' emblems, morale patches, mottos, nicknames, coins and other heraldry and insignia and remove any that are racist, sexist or derogatory, the Air Force announced Tuesday. Starting at the squadron level and moving up, commanders must abolish symbols that are derogatory "to any race, gender, sexual orientation, ethnicity, religion, age or disability status to ensure an inclusive and professional environment," according to a memo from Air Force Chief of Staff Gen. Charles "CQ" Brown, Air Force Secretary Barbara Barrett and Gen. John "Jay" Raymond, head of the Space Force. "It is critical...