DMZ Keep having to redo phalanx mission disarming presence 10 times

[Timebomb4321]

Getting tired of having to redo mission on phalanx disarming presence have completed it 10 times already screen name Timebomb4321 and Daddy1960 have 3-4 different screen shots of it being completed so why do I still have to redo it again???
CALL OF DUTY GET YOUR STUFF STRAIGHTENED OUT OR PEOPLE WILL STOP PLAYING

 

[freakdaddy64]

bring on counterstrike 2 im ready fk call of duty

 

[Crowgirl]

Yeah, I've done it 3 times. It did say somewhere that it's best to do it solo, which is what I did.