That's exactly why I wear a wristwatch at all times: to monitor when the bundle of dynamite is scheduled to go off.
I am amused to learn that the primary purpose of a long telephoto camera lens for Action Man is for scenic and wildlife photography; surveillance is a secondary purpose!
In the States, a "trusty military metal water bottle" is often referred to as a "canteen." This term can be confusing, however, as "canteen" also refers to a place selling snack foods, otherwise known as a snack bar; and it is an out-of-date term for a mobile food vending truck, which are now simply called "food trucks."
To avoid confusion, "military metal water bottle" is probably a better term.
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