(Washington D.C., June 23th - 24th; Baltimore, June 25th; & New York City, June 26th - 27th, 2014)
(Washington D.C.; November 4th - 7th, 2013)
(Washington D.C. & New York City; June 24th - 28th, 2013)
(Washington D.C.; January 9th - 11th, 2013)
(Washington D.C; June 26th - 28th, 2012)
(Washington D.C.; May 18th - 21th, 2011)
(Washington D.C.; January 4th - 6th, 2011)
(Berlin; January 20th - February 28th, 2009)