Yeah I have gotten about 15 Nukes, and 2 of those weren't called in.
Harrier Strike, Chopper Gunner, and Nuke were my killlstreaks.
Once you get over 5 it seems really easy to get them.

got a week ago playing hardcore hq on afghan. I had claymores and scavenger i say behind that open door in the cave and planted claymores at the other two entrances. eventually got it. dropped it the very instant, bad choice should have waited until later or until we were losing so i could get that challenge

I have 2 nukes on Rust map glitch and one legit one on Ground War Dom.

I've gotten about 5 or so...it's really easy once you get a 7 killstreak and use harrier.

Got another one about 5 mins ago 8)

I have gotten 11 nukes i camp in free for all

I've gotten 13.
Harrier-OR-Percision airstrike/Chopper-OR-Ac130/Nuke Ofc.

Been using AC130 for emblem, 1 off now lols.

haha i got 2 one on derail and one ina freeforall glitched match on rust

I've gotten 20 nukes using Harrier, Chopper Gunner, then the nuke. 2 of them were called in as the bomb exploded in sabotage and I still got credit for em.

I dont get nukes very often but i joined this lobby (private maatch glich) on rust and the leader of the lobby was like ye ye look at me setting up a game for you loosers, sayin everythinks of unlimited sooo within 5 mins i raped him and his friends ass's got a nuke called it in and ended there fun =]