Members from the 435th Security Forces Squadron usher more than 50 Bulgarian air force paratroopers into a C-130J Super Hercules aircraft. Members from the 435th Security Forces Squadron usher more than 50 Bulgarian air force paratroopers into a C-130J Super Hercules aircraft in support of Thracian Spring 2011 in Plovdiv, Bulgaria, on April 29, 2011. SHARE: Download: Full Size (0.08 MB) Credit: VIRIN: 973304-S-PTJ75-411.jpg Photo Gallery