User blog comment:Linathan/Squad Spotlight & Guide: Trial EX6 - Breaking Barriers/@comment-26938351-20160428153851/@comment-26347196-20160428154928

I believe at that threshold, if you have 5 units on your team, it will be hazardous for you to use 3 BB/SBB/UBB at the same time, since the maximum amount you can use is the total number of units alive divided by 2 rounded down. Meaning in your case, you can only use 2 BB/SBB/UBB