WHY in all the American films in the final, when all the villains are dead, a bunch of police cars, everything on the mask, on the main characters who participated in everything, all soaked and survived, a caring policeman must throw a wool blanket??? In this case, the action takes place in Mexico in the middle of the summer.

Yes, my dear, that in a stressful situation many have a cold (regardless of the temperature of the surrounding air), and the blanket is not so that it warms up, but a little soothing.