Nope , doesn't work that way. Suppressive fire is really a military tactic and is done with machine guns. Cops [non SWAT ] don't carry enough ammo .
Just slow down a bit and AIM , you know FRONT SIGHT !
See Lubbock SWAT 2001. We have some threads here and you can google it. 369 rounds fired, 3 people hit with 1 killed and 2 wounded after responding to a call about man who might be suicidal who was burning belongings from his house in the yard (apparently, most of his wife's stuff after they had fight). SWAT setup with teams in front and back and did a brake and rake for entry because the door were barricaded. A shot was fired and 2 SWAT guys went down in the stack for the front entry. One had a grazing scalp wound and the other was dead from the same bullet, IIRC. Front team opens open on the house with suppressive fire. Bullets travel through the house and out the back and so the back team opens up. In the fusilade, the suspect in wounded in the leg and surrendered within the hour, was treated very poorly by the cops for murdering one of the entry guys. Medical care was delay, threats were made to him,...and he didn't fire the shot.
So the man, unemployed and distraught about his situation ends up with nice settlement from Lubbock for the police's willful neglect in their operation. He had been shot while hiding inside of a closet by a random bullet...as just about all were random. The sniper had shot the fellow team members and tried to cover it up.
Aside from the sniper's shot, 368 rounds were fired into the house and not a single shooter had eyes on the suspect. Moments after the firing stopped, a radio call (used to be on the internet) was made to get somebody from the police range to bring more ammo to the scene as most of the entry folks had discharged most of their ammo from their primary guns.
So, a shot happens and the front entry team has 2 hit and so they start their suppressive fire so they can retrieve their folks and get back to safety, only their shots fly past the entry team in the back who open up with their own suppressive fire.
The suspect did have guns, but never threatened the cops with any, they never saw him with a gun, and apparently the guns were all stored/cased and unfired. So they were in the house, but he was unarmed. Lubbock PD underwent some restaffing in mgmt and on the SWAT team...all over a guy who was distraught, would not speak with the cops, and needed a ticket for the illegal disposal of garbage for burning belongings in his yard inside the city limits.
And what of the sniper who killed his own team member?
Police Cpl. Wade Lee was cited by interim Police Chief Claude Jones for violating departmental policy regarding firearms safety and falsifying a written report about the shooting of Sgt. Kevin Cox by a fellow officer.