The compression bag isn’t all that robust for long term usage. They are often tossed after a (relative) few uses in ambulances.
Fair enough... wear and tear and all. But in a pinch...? America is full of brilliant and clever minded people - just look at all the progress in the last week. New diagnostic equipment, ingenious plans to expand ventilators with a simple Y hose, and many experienced scientists and doctors whipping up what seem to be fairly effective drug regimens. President Trump unleashed the power of the private sector from the shackles of slow, myopic and self-serving regulation of federal bureaucrats to wage war against this Communist viral epidemic. There’s no going back now, I hope. First we kill this virus, then we drain the swamp.