Yesterday we learned that there's a shortage of Purple Heart medals for injured veterans.

Today we learn there's a shortage on ammunition, too.

Troops training for and fighting the wars in Iraq and Afghanistan are firing more than 1 billion bullets a year, contributing to ammunition shortages hitting police departments nationwide and preventing some officers from training with the weapons they carry on patrol.

An Associated Press review of dozens of police and sheriff's departments found that many are struggling with delays of as long as a year for both handgun and rifle ammunition. And the shortages are resulting in prices as much as double what departments were paying just a year ago.