Complex sentence: VP-19 deployed to NS Adak, Alaska, the first winter deployment of a P-3 Orion squadron to Adak, and one of the longest for a patrol squadron to date.
Split into simpler sentences: VP-19 deployed to NS Adak, Alaska. This tour of duty marked the first winter deployment of a P-3 Orion squadron to Adak, and one of the longest for a patrol squadron to date.