Several U.S. secret service snipers were seen stationed on rooftops in the Castle Hill section of The Bronx on Thursday afternoon while an emergency service unit and a small army of NYPD police officers flooded the sidewalk and street as former U.S. President Donald J. Trump made an unscheduled visit to a Castle Hill barbershop, just 20 days out from the U.S. presidential election on Nov. 5.