The Losties go into crisis mode as Jack fights to save Boone's life and Claire finally goes into labor. The boys talk about why this might be the most important Jack flashback, and why John Terry remains series MVP.

Also, fun fact: There are 7 canine blood types and 4 feline blood types.

Original Air Date: April 6, 2005

Writer: Janet Tamaro

Director: Stephen Williams

This episode of "Losing Lost" was edited by Derek Hobson.