The US Air Force has grounded all F-22 fighter jets due to problem in oxygen supply system. USA has almost 168 F-22 in war Fleet and American force has grounded all fighter jets. This decision has been taken after several complain from pilots reported.
This single sitter Raptor consist latest technologies and USA used same technology helicopter on May 2 in Abbottabad Operation. F-22 was firstly introduced during 2005 in US Air Force. The Manufacturer of this F-22 is Lockheed martin who is a private company. A single F-22 Raptor cost is US$150 Million.