Air Surveillance Radar (EASR) radar, Baseline Ten (BL10) AEGIS Combat System, a Mk 41 Vertical Launch System (VLS), communications systems, MK 57 Gun Weapon System (GWS) countermeasures and added capability in the EW/IO area with design flexibility for future growth. Constellation class (2 on order, 20 planned) Littoral combat ships Littoral combat ships LCS are a class of relatively small surface vessels intended for operations in the littoral zone (close to shore) by the United States Navy. It was "envisioned to be a networked, agile, stealthy surface combatant capable of defeating anti-access and asymmetric threats in the littorals." The and the are the first two LCS variants. Both are slightly smaller than the U.S. Navy's guided missile frigates and have been likened to corvettes. They have the capabilities of a small assault transport, including a flight deck and hangar for housing two SH-60 or MH-60 Seahawk helicopters, a stern ramp for operating small boats, and the cargo volume and payload to deliver a small assault force with fighting vehicles to a roll-on/roll-off port facility. Standard armaments include Mk 110 57 mm guns and RIM-116 Rolling Airframe Missiles. They are also equipped with autonomous air, surface, and underwater vehicles. Possessing lower air defense and surface warfare capabilities than destroyers, the LCS concept emphasizes speed, flexible mission modules and a shallow draft. The first littoral combat ship, , was commissioned on 8 November 2008 in Veteran's Park, Milwaukee, Wisconsin. The second ship, and first of the trimaran design, , was commissioned on 16 January 2010, in Mobile, Alabama. In 2012, CNO Jonathan W. Greenert stated that LCSs would be deployed to Africa in place of destroyers and cruisers. In late 2014, the Navy proceeded with a procurement plan for enhanced versions of the LCS and upgraded older ships to meet the program's 52-ship requirement; the modified LCS will be redesignated as FF. In December 2015, Secretary of Defense Ashton Carter ordered the Navy to reduce the planned LCS/FF procurement from 52 to 40, and downselect to one variant by FY 2019. It was announced in January 2015 that future and retrofitted versions of these two classes will be re-classified as frigates. The navy has currently built and/or planned out to 24 of a total of 52 ships. (10 in active service, 5 under construction, 1 retired) (12 in active service, 5 under construction, 2 retired) Mine countermeasures ships Mine countermeasures vessels or