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The ten minute walk is from a couple of nightmare jobs I was on airside at Heathrow. That was a fucking nightmare as I had to go through airport security with my tools every time I went to work. One time I was taking a powder actuated nail gun through security and was selected for a random swab screen. Many bells and whistles went off and I spent a large portion of my shift sat in a small windowless room praying I wasn't going to be asked to bend over and grab my ankles.......
We dont have any issues with charging stations or ten min walks to get batteries as we only do domestic thankfully.