The wording is probably something like "return after finished mission or within one year" because the equipment is loaned. I'd expect terms to vary wildly based on what the equipment is and who is receiving it.
As an aside, wording seems to be an important part of formulating these requests too. There was an interesting example used in coaching correct requests. Don't say you need blankets to keep detainees warm. Instead say you need blankets so that LEOs can provide detainees with warmth. Important apparently bc the property is primarily for the benefit of LEOs.