SEARSMONT, Maine — During our coverage of the fatal explosion at Robbins Lumber in Searsmont, ME, we often referred to it as a “mass casualty event.” Part of the reason the term can be confusing is that we commonly understand "casualty" to mean a death has occurred. It’s important to remember that the words “casualty” and “fatality” cannot be used interchangeably. When considering a “mass casualty event,” the meaning of “casualty” is a person or thing injured, lost, or destroyed.