Although flight surgeons did the previous two physicals that Bush had taken, Bush said in 2000 that he wanted to wait to take the examination until his private doctor could do it. But regulations required the physical to be performed by an Air Force doctor. Air Force flight surgeons were assigned to Maxwell Air Force Base in Montgomery, Alabama, located across town from Maxwell AFB at the Dannelly Field Air National Guard Base at Dannelly Field airport, where Bush was paid for drilling in October and November 1972 and in January 1973, his only drilling dates between April 1972 and April 1973.