Bomb and blast injuries: In the past blast injuries were limited to the battlefield of a rare industrial accident. The events of the past week are a reminder that civilian population centers are targets for bombing attacks. Most civilian providers has no to limited knowledge or experience treating patients with such injuries. This episode is dediacated to a discussion of some of the unique properties and injuries associated with blast injuries. In the event of a terrorist attack, like those attempted in London this past week, the injuries will be in the hundreds.