Original sentence: An RAF officer could order launch, but a USAF officer had to authenticate arming the warhead.It used yield, and the missile had a CEP of around 2-3 miles.Launch orders were to be given jointly by UK-US officers from HQ Bomber Command, High Wycombe and USAF 7th Air Division, collocated at the same base.The W-49 warhead had a yield of 1.44-megatons, and weighed 1680-lbs
Edited sentence: An RAF officer could order a missile to be launched, but a USAF officer had to authenticate arming the warhead.Launch orders for Thor missiles were to be given jointly by UK-US officers from HQ Bomber Command, High Wycombe and USAF 7th Air Division, co-located at the same base.The W49 thermonuclear warhead fitted to a Thor missile had a destructive yield of 1.44-megatons, and weighed 1680-lbs.The missile itself had a CEP of approximiately 2 miles