Complex sentence: U.S. Coast Guard and U.S. Customs and Border Patrol confirmed that they had boats patrolling northwest Washington waters looking for Jenkins, as early as Wednesday, August 19, although Jenkins was still only a "Person of Interest".
Split into simpler sentences: U.S. Coast Guard and U.S. Customs and Border Patrol confirmed that they had boats patrolling northwest Washington waters looking for Jenkins, as early as Wednesday, August 19. Although Jenkins was still only a "Person of Interest".