The horror of the Boston Marathon bombings are back in clear detail in a new video that features the city's EMS.

The clip combines video taken by the Boston Globe with radio transmission from EMS to see how they reacted in the moments after the explosions rocked the city.

The video was made for Boston's emergency response teams and is a pretty insightful look into just what happened in those initial few terrifying moments after the first bomb went off.

[Boston.com]