Summary: When disgraced ex-Air Force pilot John Sheppard swaps places with another universe, his life changes forever. Crossover with The Sentinel and SG-1.
Summary: Response to Lena's Sentinel/SGA challenge: '[...] Rodney was a Sentinel who didn't find his guide [...] somehow John misses being tested. Of course much later they would meet [...] Rodney going all these years without a guide doesn't realize what he's smelling and of course John is just clueless.