Complex sentence: The 711th flew pre-strike reconnaissance, fire support, escort, and airbase defense sorties during the U.S. invasion of Panama from 8 December 1989-7 January 1990 and it again flew combat missions in Southwest Asia from 9 February-March 1991.
Split into simpler sentences: The 711th flew pre-strike reconnaissance, fire support, escort, and airbase defense sorties during U.S. invasion of Panama from, 8 December 1989-7 January 1990. It again flew combat missions in Southwest Asia from, 9 February-March 1991.