TOPSHOT - A man rides his bicycle through a damaged road in Toa Alta, west of San Juan, Puerto Rico, on September 24, 2017 following the passage of Hurricane Maria.
Authorities in Puerto Rico rushed on September 23, 2017 to evacuate people living downriver from a dam said to be in danger of collapsing because of flooding from Hurricane Maria. / AFP PHOTO / Ricardo ARDUENGO        (Photo credit should read RICARDO ARDUENGO/AFP/Getty Images)