This be t' forth tether flight o' Xaero. Avast, me proud beauty! This is a flight that runs until t' fuel is gone. Ahoy! This makes for a good impromptu test o' t' structure at t' end o' t' run when t' rocket flames out and is caught by t' tether. Aye aye! We did nay fill t' fuel tank all o' t' way up on this flight. T' flight test went well and we'll be back out t' fly some more after t' crew has t' chance t' analyze t' data.