It's all relative. A few years ago I had to shin up a boresight mast here at work to change the Aircraft Warning Lights.
Dangling off the top at about 250' AGL I had the thought that I was too Bl*ody high. Especially as the mast was a light weight triangular lattice about a foot across each side which twisted every time I pulled on the rachet to tighten the bolts holding the lights to the tower. A bit later on I had the thought that in an aircraft at 250' AGL I'd be feeling nervous because I was too close to the ground.
Mind you neither of these situations are as scarey as being in the bucket of our very ancient cherry picker which really puts the willies up me.
