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Like a fire. we even have tactics where we can go out with i.v.s that have been cooled and that can cool people from the inside which can save lives. another program we have that's very popular is our cool pavement program. so we are really just looking at how we design the city. >> reporter: and they have been really working to help out the unhoused population there in phoenix, and also the other thing to keep in mind people may be collapsing because of heatstroke and that's when they're coming in contact with that super hot cement and asphalt and we're seeing these burns, but what we're seei...

Harness filled with ice as well as cool water to cool his body temperature down. but just goes to show how dangerous the temperatures are out here today. >> pour water all over him ultimate. >> reporter: phoenix fire captain chandler says this technique saves lives. >> we put some of our i.v.s on ice or cooler i.v.s to cool that internal temperature quicker for those individuals. we also have come up with ways of creating an ice bath immediately on scene. >> reporter: the large number of calls they are getting testing fire crews who have to brave the heat to save others. for cbs news, i'm emma...

should be able to get married. >> pretty strong words. pretty clear, too. dan lothian is live in washington, d.c. with us this morning. it took a long time for the president to evolve to this position. but why now? and why this way? >> that's right. well, the president had been under a lot of pressure to really state his position on this. and some top members of his administration over the last few days had come out and made their positions clear. and so the president finally came around on this after almost two years. he said after talking to his friends, his daughters and the first...