President Trump's scheduled 45-minute speech is a primary reason for the delayed July 4 fireworks in D.C. This delay intensifies concerns due to expected record high temperatures and extensive security measures on the National Mall. The Freedom 250 event aims to set a Guinness World Record with an 850,000-shell fireworks display lasting 40 minutes. However, President Trump's tendency for extended speeches makes the exact start time unpredictable. He is slated to begin speaking at 9:50 pm, but the duration remains uncertain. Cabinet members and Congress are expected to attend this speech. A significant military flyover, including Air Force One and a 17-aircraft formation, will also be part of the event. Mayor Muriel Bowser announced the fireworks would not begin until 11 pm. Freedom 250 advertises a 10:30 pm start time, and 11 pm was a consideration as recently as last week. Planning remains very fluid, with timelines subject to change. The possibility of thunderstorms could push the fireworks even later, potentially into July 5th, especially if evacuations are necessary. Attendees are facing prolonged heat and travel disruptions due to these delays.