Houston

Officials have imposed a curfew and stiffened sentences for crimes in the disaster area. Burglarizing a home could mean life in prison. At least 14 people accused of looting have been arrested.

People with kidney failure typically need dialysis every other day to stay healthy. Delays in treatment can quickly become life-threatening.

With thousands of people displaced, health workers are trying to address the immediate medical needs of evacuees as well as mental health issues made worse by the disaster.

Shelters around Houston are struggling to keep up with the thousands of people forced from their homes. The downtown convention center is filled beyond capacity, and people are still arriving.

Described as a "sweet, gentle public servant," Perez ignored his family's warnings that it was too dangerous for him to report to work.

John Livious and his family settled in Houston after being evacuated from New Orleans during Hurricane Katrina. For him, watching the flooding from Harvey is "unbearable, because it's like déjà vu."

The president heads to Texas on Tuesday to survey the damage from Hurricane Harvey. It will be a test of his young presidency to show empathy and competence in responding to a historic storm.

"We did all that we could, but it would never have been enough," Kristin Massey wrote on Tuesday. She added, "I encourage everyone to continue to give manpower wherever they can."

Houston remains in rescue mode as Tropical Storm Harvey continues to dump water on the flooded region. About 5,500 people have been brought to emergency shelters in the city, the mayor said Monday.

The Federal Emergency Management Agency expects 450,000 people to seek help — including over 30,000 needing shelter. But as floodwaters rise, those aren't the only numbers defining the rescue efforts.