 Franco Ordonez, NPR News, Grand Rapids, Michigan. Secret Service Director Kimberly Cheadle will be on Capitol Hill this week. She is set to testify tomorrow before the House Oversight Committee. The CrowdStrike computer glitch led to flight cancellations and delays. It also had a huge impact on hospitals around the world. NPR's Selina Simmons-Duffin reports on what it was like when systems crashed at one hospital in California.