"Really long speech": Trump's July 4 show collides with extreme heat

What they're saying: Teasing what's scheduled as a 45-minute speech, the curtain raiser to a massive fireworks, Trump on Wednesday said: "It's going to be approximately 107 degrees out, and I'm gonna go, and I'm gonna make a really long speech."

• Arms outstretched, Trump declared: "Just to show that I can do anything."

On the National Mall, security will dial up to presidential inauguration-levels. Guests will go through TSA-style security, the Secret Service has said, and only a small clear bag or clutch is allowed.

• Coolers and folding chairs are on the prohibited items list, but blankets and strollers are allowed.

Here's the run of show, per Freedom 250:

• 1pm: Guest entry begins, between 14th and 17th Street.
• 1:15pm: Military flyovers will begin and run on the hour until sunset.
• 5pm: Opening programming starts.
• 7pm: Freedom 250 Salute to America program begins.

• 9:45pm: President Trump scheduled to speak.
• 10:30pm: Fireworks, going 40 minutes long, shooting off from the Mall and the Potomac River in a bid to set a Guinness World Record.

Between the lines: The start of the fireworks depends on how long Trump's speech runs, as we reported Tuesday, and whether there's a rain delay.

What to know: Organizers are urging crowds on the National Mall to drink water and seek shade breaks.

• Water distribution stations will be on the Mall, along with refill points and water misting areas, organizers say.