Coast Guard Commandant Admiral Thad Allen, U.S. Customs and Border Protection Deputy Commissioner Jayson Ahern, U.S. Navy Commander Submarine Group Trident, Rear Admiral Frank Drennan, and other dignitaries will be in attendance Wednesday at 10 a.m. for the Coast Guard Joint Harbor Operation Center (JHOC) ribbon cutting ceremony at Pier 36 here. The ceremony recognizes officially the operation of the JHOC. The JHOC is the home for Sector Seattle's Command Center, Communications Center and Vessel Traffic Center. The JHOC will be the premiere state-of-the-art maritime Command Center for the Pacific Northwest partnering Coast Guard with Navy…