On September 19, 2012 BG Carter agreed to retire from the Massachusetts National Guard after a report from military investigators that "found probable cause that he indecently assaulted a subordinate while the two were on a training exercise in Florida in 1984". Investigators stated that they did not find evidence to substantiate a charge of rape, but concluded that "he probably touched her inappropriately, engaged in conduct unbecoming of an officer, and later made false claims about the incident". Carter released a statement stating that he was "vindicated because the Army did not deem the most serious allegation against me to be credible" but was "disappointed that the Army has found probable cause for other alleged offenses. I never assaulted anyone, and I cooperated fully with CID's investigation and told the truth". He further stated that he was retiring to prevent the "unfounded allegations" from becoming a distraction to the National Guard.