front end alignment

I just had 73 cuda in for an alignment.I checked the front over to check for worn/loose parts. I checked ride height, greased it, wiped off the zerks then opened the hood. The customers waite in the office and I usually don't get to talk to them, but as soon as I opened the hood he asked why the hood was being opened and demanded to come out and talk to me. Let's just say he did a lot of cursing and took his car away burning rubber half way down the block. I hope he never comes back with that kind of attitude. Kim