It was 2007 when I tried breaking into the defunct control tower at Austin's former Robert Mueller Municipal Airport -- you can call that "urban exploration" or "criminal trespassing" at your discretion, though at the age of 15 there's admittedly not much distance between the two. My failed attempt arrived long after the site ceased its final civil aviation operations almost exactly 20 years ago in June 1999, and even a few years after the deal successfully hashed out in 2004 between national real estate firm Catellus and the City of Austin for the redevelopment . . .