The death toll in Texas has risen to at least 121, one week after the historic flash floods devastated the state. There are still over 160 people unaccounted for. Among the rescue workers helping in the recovery effort are several teams of volunteers from Mexico, including a group of firefighters and the international rescue crew Topos Azteca. This is the group’s founder, Héctor Méndez.

Héctor Méndez: “It’s called empathy. When you see the people are suffering and you can help them, you have to go do the work. … We’re all the same people. We’re one family. So we’re going to be here until they tell us to leave.”