FI at 54.5 (the year of my 55th b-day, so will have immediate access to 401k). In federal law enforcement, so could go until 57 (mandatory retirement age) if things went south with the market, but not planning to go a day past Jan. 3, 2020 if I can help it. Older than most "early retirees" around here, but considering 6 years were spent traveling the world courtesy of the U.S. Navy, 4 years were spent in college after that, and then another 3 years in law school, I'll have only had to work in the "real world" for @22 years. Plan to pursue work as a climbing guide after that (i.e., doing something I love).
Wife will hopefully follow at around the same age (55), which means she's got to work another 7 or so years after I reach FIRE.
Life is good and I'm thankful every day for my good fortune.