That is the ONLY movie I can think of where a "professional assassin" actually acted as one. Everywhere else the "professional" has two MAC-10s under his two-piece suit and shoots everyone by spraying obscene amounts of 9mm ammo while holding the guns sideways
Michael Mann had Tom Cruise train with a former SAS member. Every scene was choreographed and rehearsed until it was all smooth
This is the only movie I have pointed at the character handling firearms and said... "now, that's how it's done"
I never get tired of watching it and the club shootout scene is another superbly done scene