Israel to expend what it did have more freely". By the end of Nickel Grass, the United States had shipped 22,395 tons of matériel to Israel. 8,755 tons of it arrived before the end of the war. American C-141 Starlifter and C-5 Galaxy aircraft flew 567 missions throughout the airlift. El Al planes flew in an additional 5,500 tons of matériel in 170 flights. The airlift continued after the war until November 14. The United States delivered approximately 90,000 tons of materiel to Israel by sealift by the beginning of December, using 16 ships. 33,210 tons of it arrived by November. By the beginning of December, Israel had received between 34 and 40 F-4 fighter-bombers, 46 A-4 attack airplanes, 12 C-130 cargo airplanes, 8 CH-53 helicopters, 40 unmanned aerial vehicles, 200 M-60/M-48A3 tanks, 250 APCs, 226 utility vehicles, 12 MIM-72 Chaparral surface-to-air missile systems, three MIM-23 Hawk SAM systems, 36 155 mm artillery pieces, seven 175 mm artillery pieces, and large quantities of 105 mm, 155 mm and 175 mm ammunition. State of the art equipment, such as the AGM-65 Maverick missile and the BGM-71 TOW, weapons that had only entered production one or more years prior, as well as highly advanced electronic jamming equipment, was also sent. Most of the combat airplanes arrived during the war, and many were taken directly from USAF units. Most of the large equipment arrived after the ceasefire. The total cost of the equipment was approximately US$800 million (US$ today). On October 13 and 15, Egyptian air defense radars detected an aircraft at an altitude of and a speed of , making it impossible to intercept either by fighter or SAM missiles. The aircraft proceeded to cross the whole of the canal zone, the naval ports of the Red Sea (Hurghada and Safaga), flew over the airbases and air defenses in the Nile delta, and finally disappeared from radar screens over the Mediterranean Sea. The speed and altitude were those of the U.S. SR-71 Blackbird. According to Egyptian commanders, the intelligence provided by the reconnaissance flights helped the Israelis prepare for the Egyptian attack on October 14 and assisted it in conducting Operation Stouthearted Men. Aid to Egypt and Syria Soviet supplies Starting on October 9, the Soviet Union began supplying Egypt and Syria by air and by sea. The Soviets airlifted 12,500–15,000 tons of supplies, of which 6,000 tons went to Egypt, 3,750