A coordinated 5-stack is almost unbeatable in R6 Siege.
Hard breacher (Thermite/Ace) + soft breacher (Buck) + intel (Flores) + flank watch (Nomad) + entry (Ash/Iana).
Wall denial (Bandit/Kaid) + intel (Valkyrie) + anchor (Mira) + roamer (Vigil) + flex (Jager).
Find your 5-stack on R6 Siege LFG.