Not quite OBA, but it is if you bring it with you! Milwaukee M18 2 gallon compact air compressor. | Jeep Wrangler Forums (JL / JLU) - Rubicon, Sahara, Sport, 4xe, 392 - JLwranglerforums.com
Milwaukee M18 2-Gallon Cordless Quiet Air Compressor Review
Milwaukee 2840-20 2 Gallon Oil-Free Hand Carry Air Compressor : Amazon.co.uk: DIY & Tools
Milwaukee Air Tools & Air Compressors for sale | eBay
Milwaukee M18FAC-801 Battery Powered Oil-Less Air Compressor 7.6L, 8Ah High-Output Battery and Charger Bundle