Defense One: US Preparing to Put Nuclear Bombers Back on 24-Hour Alert MARCUS WEISGERBEROctober 25, 2017The U.S. Air Force is preparing to put nuclear-armed bombers back on 24-hour ready alert, a status not seen since the Cold War ended in 1991. Click to email a link to a friend (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Read the full article.