was stationed in Cyprus in March 2011 to help in the enforcement of the no-fly zone over Libya, and a U-2 stationed at Osan Air Base in South Korea was used to provide imagery of the Japanese nuclear reactor damaged by the 11 March 2011 earthquake and tsunami. In March 2011, it was projected that the fleet of 32 U-2s would be operated until 2015. In 2014, Lockheed Martin determined that the U-2S fleet had used only one-fifth of its design service life and was one of the youngest fleets within the USAF. In 2011 the USAF intended to replace the U-2 with the RQ-4 before fiscal year 2015; proposed legislation required any replacement to have lower operating costs. In January 2012 the USAF reportedly planned to end the RQ-4 Block 30 program and extend the U-2's service life until 2023.Majumdar, Dave. |topnews|text|FRONTPAGE "Sources: USAF to kill block 30 Global Hawks." Defense News 25 January 2012. Retrieved: 25 January 2012. The RQ-4 Block 30 was kept in service under political pressure despite USAF objections, stating that the U-2 cost $2,380 per flight hour compared to the RQ-4's $6,710 as of early 2014. Critics have pointed out that the RQ-4's cameras and sensors are less capable, and lack all-weather operating capability; however, some of the U-2's sensors may be installed on the RQ-4. The RQ-4 Block 30's capabilities were planned to match the U-2's by FY 2016, the replacement effort is motivated by decreases in the RQ-4's cost per flying hour. The U-2's retirement was calculated to save $2.2 billion. $1.77 billion will have to be spent over 10 years to enhance the RQ-4, including $500 million on a universal payload adapter to attach one U-2 sensor onto the RQ-4. USAF officials fear that retiring the U-2 amid RQ-4 upgrades will create a capability gap In the House Armed Services Committee's markup of the FY 2015 budget, language was included prohibiting the use of funds to retire or store the U-2; it also requested a report outlining the transition capabilities from the U-2 to the RQ-4 Block 30 in light of capability gap concerns. In late 2014, Lockheed Martin proposed an unmanned U-2 version with greater payload capability, but the concept did not gain traction with the USAF. In early 2015, the USAF was directed to restart modest funding for the U-2 for operations and research, development, and procurement through to