I will be a TA (Teaching Assistant) at an archaeology field school in Sicily this summer. I'm not sure yet what sort of equipment I will be carrying, but I do know I will at least have two digital cameras (one with an extra lens), a laptop (with multiple accessories), and two GPS units (for the research/excavation we will be doing). It is possible I may even be carrying three GPS units. (Two normal consumer handhelds, and definitely one custom specialized unit). There will also some extra rechargeable batteries, cables, etc. along with some other items (possibly also a PDA with attachments for data collection).
I'm not sure yet how much it will weigh- but if all of this runs a little over 20 pounds, can you make special arrangements with the airlines so they will allow it? I haven't weighed it all yet- but I doubt it will all go over 25 pounds or so.
There is NO WAY I will pack any of this in my checked luggage. It's too valuable to me, and too important.
Also-
Considering all of the electronic equipment I'll be bringing, are there any suggestions on dealing with security? I don't mind going early if needed- but don't want any unnecessary hassles.