Same experiece. Working at a university, we get a lot of politicians campaigning for the presidency and/or vice presidency. The Secret Service detail always has SS positioned on the rooftops of all buildings on campus in the proximity of the rally area. When Biden came to our university when he was first running for the vice presidency, he wanted the rally to take place outside in the early evening. At dusk, as the sun went down, you could see the silhouettes of all the SS agents positioned on the top of the buildings.Yes! Because when a president or former president has come to the city where I live Secret Service members are positioned on each rooftop.