Stephanie McCallister holds a cold bottle of water to her husband Don McCallister's neck as they wait in line for the ferris wheel at the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jen Golbeck)

Visitors wait to enter the Washington Monument, Wednesday, July 1, 2026, in Washington. (AP Photo/Tom Brenner)

People cross 15th Street Northwest as a National Guard Humvee blocks the roadway, Wednesday, July 1, 2026, in Washington. (AP Photo/Tom Brenner)

Children reach for cold bottles of water from U.S. National Park Police Officer R. Douglass as they wait in line for the ferris wheel at the Great American State Fair on the National Mall, Wednesday, July 1, 2026, in Washington. (AP Photo/Jen Golbeck)

Karolina Silva Matis, a 6-year-old oncology patient, is examined by Dr. Yolainy Romero Rodriguez at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)

Emanuel Darian, an 18-year-old oncology patient, left, rests as his mother Katiuska Guerrero sits by his side at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)

Salet Fernandez, a 17-year-old oncology patient, looks at her phone as her mother Yarima Mesa sits by her bed at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)

Nashly Zerquera, a 4-year-old oncology patient, sits in her bed at the National Institute of Oncology and Radiobiology in Havana, Cuba, Wednesday, June 24, 2026. (AP Photo/Ramon Espinosa)