In two weeks time I will be flying from LHR to GDL via DFW to conduct a technical consultation for a customer.

I will be bringing my regular laptop but also two expensive light measuring devices, all of which are my personal kit which I will be bringing back home at the end of the week.

Two colleagues have said that I might need a signed statement that I will be bringing the equipment out, but I cannot find anything specific online or in this forum?

Does anyone here know the answer to this? Any advice appreciated.