Chris and Erin came to our aid when my husband, Russ’s, personal oxygen concentrator malfunctioned. Erin set up an O2 mask with a canister of O2. Chris made sure he maintained consciousness. When we got off the plane, we immediately got to a hospital where we found out he was experiencing CO2 poisoning! He was in the hospital for four days where he was intubated for a short time to rid his body of the poison. Chris and Erin were true lifesavers that day, and I hope you will extend our gratitude to them for their calm response and knowledge. Russ is back at home and doing well.