Due to this dire situation, I took a few minutes to google for you. 
Seems like these guys do antenna installs on top of AV stuff. They’re in Wake Forest but they may be willing to come your way…
A lot of times custom A/V installers are adding antenna mounting to their list of services so it’s worth googling for that too.
Local Facebook groups are another great place to ask for recommendations on local folks who can help keep you off the roof and in one piece.