Painted Rock Mountains The Gila River crosses all of southern Arizona from southwest New Mexico, and is the drainage for about 1/2 of Arizona (the south). The highest elevation in the mountains is "unnamed" at , and is located at the central & east region of the range. (The range has many northwest-by-southeast ridgelines.) Painted Rock Mountains The Painted Rocks Mountains are a short 15-mile (24 km) long mountain range of the north-central Sonoran Desert southwest of Phoenix, Arizona and in southwest Maricopa County. The Gila River flows through the central-north end of the range. The famous Painted Rock Petroglyph Site lies at
Lockheed U-2 was kept in service due to political pressure over USAF objections, who state that the U-2 costs $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 a lack of 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