The TSA screened nearly 2.15 million people on Thursday, close to 3% more than the 2.01 million people who passed through security checkpoints at U.S. airports on July 1, 2019. The trend is unlikely to hold. July 1, 2019 was a Monday and a low point for the week, when screenings increased by more than 706,000 people to peak on July 5. Still, the milestone shows the surge in air travel demand since a broad rollout of vaccines in the U.S. this spring and a relaxation of pandemic-related closures or restrictions. The increase is mainly due to domestic U.S. leisure travel, with most business-related and long-haul international travel still on hold.