Surprise on Memorial Day

A group of firefighters were at a Costco Store in Vacaville, CA buying their groceries when they got a call and had to leave.  They had been in line to check out so they left their cart and rushed to the emergency.  When they returned to the store to pay for their groceries, they found that the bill had been paid by an "Air Force wife."  No one knows who the woman was but the firefighters have decided to pay it forward with the money that would've been spent on the food.  good deed