I'm still learning the ins and outs of this series and the impression i got is that you can't double up on scorestreaks. in other words you cant have 3 care packages etc..
I was on hijacked last night and was killed after spawning 4 straight times by a hunter killer drone. While this is annoying its not completely unusual because i'm like a homing beacon for these things. the problem was that I spawned immediately each time and the drone came from the same person every time.
there is no way the guy could get them this fast. is the swarm a bunch of drones? its the only thing i could think of. also, what are the chances that every one of them hit me?
Your enemy probably earned one, got another from a Care Package then earned another. In a "High Score" sorta gametype like Hardpoint, you can cycle ScoreStreaks extremely quickly.
Also, your team might've had people indoors and/or using Blind Eye. So, instead of a 1:6 chance it'll choose you, it might've been a 1:2 chance the Hunter Killer Drone would kill you-- and just bad luck.
Swarms are a pain, I would have to say its the most annoying kill streak. I always keep a class with blind eye in reserve just for this. If you hear swarm is up, when the first kills you just swap to the class with blind eye.