The nation is marking 25 years since 9/11, honoring lives lost and impacted. Ed Sawicki, an EMT and paramedic, responded in the aftermath and has spoken about his experience.

He has since taken on a new mission to help first responders struggling with trauma. Sawicki spent years working as an EMT and paramedic.

Further details about his experience and mission are available from KTVU, where he shared his story.