Windshield Removal '73 Swinger

I am restoring a 73 Swinger for my son who is in the Navy. I need to take the front and rear windshields out for some body repair and easy access to the dash vents. I thought I would hire a windshield repair place to take these out and then come back and put them in when necessary. But the 'pro' told me the windshield would break if I took them out? I said there is no need to pay you if your going to break my windshield, I can do that myself. Does his comments make any sense to anyone? Shouldn't these windshields come out without breaking? Help?