I belong to a Facebook group for people taking Tagrisso (Tag for short). Occasionally people post pictures from their travels with the caption "Tag on Tour" to show that Tagrisso is enabling them to travel and living a full life despite cancer. Well, I'm now at the point where I can start my own tours on Tag. We drove to 8 hours Grand Rapids, MI for Thanksgiving--the first time seeing my Michigan family (including my 95-year-old dad) since July 2021. I arranged to get a portable oxygen concentrator with continuous flow and used that in the hotel room overnight. So I knew I could travel safely by car. But what about flying? The missing piece was a test to determine how much supplemental oxygen I would need at altitude. My pulmonologist ordered a high altitude simulation test, but--of course--it wasn't available at any hospital within a 2-hour drive of State College. Leland was out of town, so my friend Allison got up at the crack of dawn to accompany me to Pittsburgh ...