August 2012, at 1:00 a.m. local time, the guided-missile destroyer collided with the Panamanian-flagged, Japanese-owned oil tanker MV Otowasan near the Strait of Hormuz. The collision ripped a large hole in Porter's starboard side above the waterline, forcing her to put into Jebel Ali, Dubai, for inspection and repairs. No one on either ship was injured from the collision. Otowasan had been en route from Fujairah, UAE, to Mesaieed, Qatar, at the time of the collision. On 12 October 2012, the strike group transited the Suez Canal, with Porter rejoining following extensive repairs. From 24–26 October, Enterprise offloaded munitions to and , at sea in the Atlantic. On 4 November, Enterprise returned to Naval Base Norfolk, Virginia, after steaming during its seven-and-a-half-month deployment. and 2012 deployment force composition 2012 deployment combat operations, exercises, and port visits Enterprise inactivates, cruiser changesEnterprise was inactivated on 1 December 2012 at Norfolk Naval Station, Virginia. was reassigned as the group's new flagship. Carrier Air Wing One was reassigned from Enterprise to Roosevelt. Initially, the U.S. Navy had planned to retire Vicksburg along with three other s in fiscal year 2013. However, after much discussion, Vicksburg and two other Ticonderoga-class cruisers were retained under the National Defense Authorization Act for Fiscal Year 2013, with Vicksburg joining as units of Carrier Strike Group Twelve.National Defense Authorization Act for Fiscal Year 2013, p. 5. On 14 January 2014, the Navy announced that Theodore Roosevelt was to shift its homeport to Naval Base San Diego, California and the U.S. Pacific Fleet. With Theodore Roosevelts homeport change, relocated to Japan in 2015 as part of the U.S. Navy's preparation for the planned refueling and overhaul of . 2013–2014 operations On 22 October 2012, the Department of Defense announced that Rear Admiral Kevin Kovacich was selected to take command of Carrier Strike Group Twelve. A naval aviator, Admiral Kovacich took command of the strike group on 15 April 2013.Theodore Roosevelt returned to Norfolk Naval Station, Virginia, on 29 August 2013, completing its post-overhaul sea trials that concluded its four-year mid-life Refueling and Complex Overhaul. On 14 September 2013, Theodore Roosevelt successfully completed flight deck certification which entailed completing a total of 160 carrier landings during daytime and night-time operations. Other certification drills included rigging the emergency barricade, flight deck firefighting evolutions, and crash and salvage operations. On 17 September 2013, Theodore Roosevelt completed its first underway replenishment in over four