Complex sentence: In late 1972 and early 1973, he drilled with the 187th Fighter Wing of the Alabama Air National Guard, having moved to Montgomery, Alabama, to work on the unsuccessful U.S. Senate campaign of Republican Winton M. Blount.
Split into simpler sentences: In late 1972 and early 1973, he drilled with the 187th Fighter Wing of the Alabama Air National Guard. He had moved to Montgomery, Alabama, to work on the unsuccessful U.S. Senate campaign of Republican Winton M. Blount.