“Lang says he just happened to be flying there at the time and reported it”
No, Lang was told by the tower to look for it as an ELT had gone off.
“Lang and Thomson were on their way to visit friends in Maui and had contacted the Moloka’i tower for clearance just before 3:30 p.m. Wednesday. They say the tower operator asked if they were able to hear an “ELT” or Emergency Locator Transmitter. They tuned into the signal, but it was faint so they say they began searching for it and scanning the area for wreckage.”
It doesn’t say whether someone told the tower or the tower heard it on there own.
As far as Lang contacting the tower for clearance which you seem to think is suspicious, maybe he does that out of habit or he was following good practice.
BTW, Lang may have taken individual still pictures but he also took video. Look at Post 684, those are screen shots I took from his video.
Where did you see his video?
He happened to be flying in the area, and managed to find the crash while the trail of the landing was still showing in the water. Really good coincidental timing.