"I'm on it!"
John called out as he charged toward the house and then he spotted stone steps on the outside wall, so he ran up them.
A sniper rifle lay on the roof, and nearby, a man was staggering in an attempt to stand up; he was surrounded by shattered pieces of a drone and blood.
John kicked out, flipping the sniper to the ground while simultaneously smashing the butt of the gun into the enemy's face. Only then did he snarl, "Don't move!"
Remember, if possible, first incapacitate the enemy, then warn them not to move. It's much safer than expecting them not to dare move on their own.
People who act faster than they think don't need to ponder such actions; they just naturally do it!
Then John stepped on the sniper's right arm and jabbed the muzzle of his gun hard against the sniper's face, snarling, "How many of you are there, where are the others, speak!"