After Monday's terrible event in Farmington, all of us in Maine are deeply touched and saddened. We send love to the families and our friends in that community after the explosion that killed one firefighter and injured several others.

This man from Casco was moved by the tragedy and has written an open letter with his explanation of what occurred.

His name is Aaron Bradeen, and according to his Facebook post, he is a gas technician and a former firefighter.

Aaron has an important message that tells of how quickly an explosion can happen when there is a gas leak and a spark.

This very well-written important information. Thank you, Aaron.