Nopt a steely eyed rocketeer but a quick search of the Redstone Arsenal, Army MAterial Command and USAFM holdings do not show a M24 associated with the Thor (it is however the 20mm cannon system son a B-36). Maybe it is Blue Streak. One way to find out is the National Stock Number that looks like this 1234-12-1234 and may have some letters or numbers leading or trailing. That is like a catalog number for everything military and that ties names and inventory managers and systems and stuff.