Planning a long cross-country or some mountain flying? Interested in having an oxygen tank to take with you for high altitude? I have a couple of extra tanks which I’d be happy to sell for $25 each. I can also give you a prescription to have them filled at a medical oxygen place like Indiana Oxygen (cheaper than the airports). Send me an email tobin@greensweig.net or call/text 707.322.5356 if you’re interested.