Pentagon confirmation that the pilot suffered shrapnel wounds and the F-35 made a 'hard landing' and will will be out of service for a while.
Most likely, the F-35 crashed in Saudi near the coast, the pilot was able to fly his damaged jet back across the Gulf and bailed out. The Chinook circling over that region was likely looking for the pilot and/or the crashed jet in that sparsely populated desert.
"In the hours following the incident, a US Army MH-47G Chinook, registration 19-02916, was tracked on FlightRadar24 flying an extensive series of tight circling patterns over the eastern Saudi Arabian region near Al Jubayl. The flight pattern is consistent with Combat Search and Rescue operations: the kind of search profile you fly when you are looking for a downed aircraft or a pilot on the ground.
The IRGC claims the shoot-down occurred at AM Iran time. The Chinook's search activity and the timeline raise questions about whether the F-35 reached a base at all, or whether it came down somewhere over Saudi territory.
CENTCOM says it landed safely. A Chinook was circling the Saudi desert in a CSAR pattern.
One of those things may not be true."
"SAMbush" tactics brought that plane down, I think the missile was guided by the drone filming the F-35, tracking it passively through its infrared signature. The pilot didn't see the missile coming, didn't attempt any evasive maneuvers or countermeasures, he wasn't lit up by any radar, and didn't use his, as customary with stealth jets that don't want to reveal their position.
The missile is a relatively small one that can be fitted in 4-packs on the flatbed of a small truck. Needless to say, this is a pretty smart solution for the Iranians, mostly homegrown, it relies on that tandem setup being in place in areas where the Iranians anticipate US/Israeli flight paths.