I supported a squadron of OV-10’s for a while in the late 80’s.
It’s a pretty neat plane with a canopy that lets you see everything. The only things we put on them were 2.75 inch rockets and chaff&flare countermeasures. It could hold more and was being fitted for Aim 9’s before I got out. Rumor had it they were going to try out AGM 65’s on them.
The size of the engines always surprised me as they were just about the same size the jets they used on ground equipment. Much smaller than the Isuzu strait 4 in the Chevy Luv I owned at the time.
You would think the pilot’s of this craft would be more humble the fighter jokey’s on base but they tended to act like prima donas.
One great memory I have is when they did some formation flying for us during a TDY / Exercise. It looked like they were having fun but were made to look silly when the Thunderbird’s did their weekly training a couple of hours later.
I liked the little plane. It was pretty quiet and could loiter for a long time.
Hydra-70 compitable laser guided systems exist.
http://www.battle-technology.com/exhibitions.asp?key=239
Advanced Precision Kill Weapon System (APKWS) by is in production and use
https://en.wikipedia.org/wiki/Advanced_Precision_Kill_Weapon_System
I would expect that the OV-10’s if kept in use will have this system soon if not already.
Qung Tri did not have a bomb dump, and no airbases nearby to borrow them from, so logistics would have been interesting.