The US Air Force RC-135U, codenamed "Send Combat" (serial number 14849-64), took off from Offutt AFB and is currently crossing the Atlantic Ocean. Is this plane going to West Asia? The aircraft, which is one of two RC-135U aircraft in the US Air Force fleet, operates in the field of electronic intelligence gathering (TechELINT). The aircraft accurately detects, locates and measures radar signals, including those from air defense systems, and helps analysts assess the capabilities of these systems and develop countermeasures. safety.