You know when placing a nuke always have the disarming engineers in dilema.
find as closed up an area as possible...
plant a timed C4 then plant the nuke....engineers come ignore the C4 go for the nuke... result:1/2 disarmed nuke... 2 engineers and 1 building in pieces....(helps to stick around and distract engineers with gun fire)
engineer goes for C4... (kill the guy going for the nuke)... stand infront of the nuke and make like a palestinian suicided bomber.
result: 1 building in pieces... and you in it...