U.S. Air Force photo/Jet Fabara The Air Force and Boeing now expect the first KC-46 Pegasus tanker to arrive in October. The KC-46 program has taken years and faced numerous delays. Lawmakers are already calling on the Air Force to look into unmanned tankers. The Air Force and Boeing have reached agreement on delivery of the long delayed KC-46 Pegasus tanker, with the two sides expecting the first aircraft to arrive in October, according to Bloomberg. Boeing's original deadline to deliver 18 planes and additional materials was August 2017, but the $44 billion program has been hit by numerous delays and setbacks, and the Air Force said this spring it expected Boeing to miss its deadline to deliver the planes by October, with the first KC-46 not arriving until the end of the year and all 18 planes by spring 2019.See the rest of the story at Business InsiderNOW WATCH: Here's how the US military refuels B-52 warplanes in midairSee Also:The US is on pace to bomb Afghanistan more than ever this year, but the nominee to be US commander there 'can't guarantee ...