Iranian forces and US teams are searching for a missing American weapons systems officer after a surface-to-air missile downed an F-15E Strike Eagle in southwest Iran.The incident represents the first loss of a US combat aircraft on Iranian soil during the current six-week conflict, contradicting claims by Donald Trump that the local military was destroyed.While US para-rescue teams successfully extracted the pilot during a hazardous mission in the mountains, Tehran has offered a reward for the capture of the remaining airman.