Actor Hiroyuki Sanada (Dogen) is trained and highly skilled in the martial art forms of Shorinji Kempo and Kyokushin Karate and does most of his own stunts, especially fight scenes; some of his fighting techniques are demonstrated in his fight with Sayid. In this fight scene a stunt double stands in place for Naveen Andrews as Sayid but it is actually Hiroyuki Sanada doing the fighting for Dogen.
As Sayid and Nadia are entering the hospital, Jack is seen in the hallway walking toward them.
Miles and Sun meet in this episode for the first time in the series.
Keamy is wearing the Rolex watch Jin was to deliver to Los Angeles.