I packed my gear for a little road trip I was taking and after finding an isolated spot in a public parking garage I decided to take advantage. I contemplate what to use, and am a little indecisive because I am so nervous about getting caught. I choose to strap on a black rubber anesthesia mask and do some rebreathing. Nerves get the better of me as I struggle to keep rebreathing and just after I stop I notice someone has pulled up nearby and panic. I cover up quickly and turn off the camera. Moments later, after they've left, I decide to turn it back on and use an AMBU bag together with my AMBU mask to try to help calm myself. I struggle with finding somewhere to affix the bag but find just the right spot and then I take a few deep, restorative breaths.