 SPOILER: The number of humans in the fleet is constantly updated in  the opening credits. The count does not include Cylons (it did not  diminish when Galacticas Boomer was killed, and only increased by  one when Helo and Capricas Boomer arrived). The arrival of the  Pegasus increased the count by 1752 souls, one of whom was  subsequently killed during the course of the episode. Similarly, at  the beginning of episode 2.17, "The Captains Hand", the count on  President Roslins "White Board" is 49,584 early on in the show but  is 49,579 toward the end of the show, indicating that during the  Pegasus battle with the Cylon Base Stars, five people were killed.