 Extreme heat across much of the country this Fourth of July and a boil water advisory in effect for all the nation's capital because of a water treatment problem. You're listening to ABC News. Hi, welcome to Staples. Hi, my son's teacher emailed his back-to-school list. He needs crayons and a comp book for every subject. Okay, no problem. With Staples Hot Deals, you'll find super low prices on hundreds of items.