Holy crap did this post not age well....
Long time absence returning ran into a bug. Did a google... found a post and the division support team, specifically Ubi-Keo said this would be fixed... TWO YEARS AGO. HOLY [censored]. its still a bug. does UBI just not give a [censored] about fixing bugs??
https://forums.ubisoft.com/showthread.php/2069440-Federal-Emergency-Bunker-Bug
If any players have an issue with this, just shoot the boss even after hes dead and it will spawn the mobs required to finish the mission. Small Indie company for sure here... jesus