Support challenge “Goliath”

The game is amazing, I haven’t been able to put it down since launch. With that being said I’m level 54 and planned on working on the 2nd track of 3 challenges for support. It’s reward is a Goliath supply kit, the intercept missiles, and or grenades is not tracking at all for me. I’ve tried multiple game modes and no luck. I’m sure you guys are working on a resolution and I wanted to make sure this challenge was made to note since the fair amount I saw on here just had to do with challenge track 1 and healing/resupplying. 

Also please keep the challenges the way they are, I see some posts saying they are too hard and I completely disagree!! 

thanks for everything!!