India, April 4 -- A high-risk search and rescue mission is underway after a US fighter jet crashed inside Iran, leaving one crew member still missing. The pilot has been rescued, while efforts continue to locate the second airman, according to reports cited by TIME, Axios and CBS News.

While details of the crash are still emerging, the situation points to how the US military conducts one of its most complex operations: recovering personnel from hostile territory.

Rescue missions begin with a race against time to locate the downed aircrew. Often, an aircraft ejection triggers a distress signal, alerting military teams. However, pinpointing the exact location remains a major challenge.

"It is a very complex effort," Brigadier General Hou...