The aftermath of Hurricane Katrina is expected to shake up the Pentagon's Quadrennial Defense Review, according to Pentagon officials, underscoring the military's key role in relief and recovery missions following domestic disasters. As the congressionally mandated review approaches its final phase, defense officials are preparing options for a wide range of changes to the military, including the size of the total force, the services' roles and missions and the weapons they will need. Pentagon officials involved in the QDR, however,...