Ex-military surgeons, including Dr. John Holcomb, advocate for US laws allowing ambulances to carry blood to revolutionize trauma patient treatment.

Ex-military surgeons, like Dr. John Holcomb, are advocating for laws allowing ambulances to carry blood in a bid to revolutionize trauma patient treatment in the US. Inspired by a 1993 experience in Somalia where they served as "walking blood banks", the surgeons aim to expedite blood delivery to save lives. These efforts follow the success of similar policies in other countries, such as Australia and the UK.