President Trump is expected to visit Southern California Friday to survey the damage from the devastating wildfires. Rebuilding is likely going to take years - an experience that UC Berkeley professor Nancy Wallace knows firsthand. In 1991, she lost her home in the Oakland Hills firestorm, and since then, she's focused her research on fire risk and real estate. Wallace spoke with KQED’s Rachael Myrow and they discussed how communities in fire-prone areas can learn to lean on each other.