Who Is Craft and What Of The Tamerlan Tsarnaev Capture Video?

These are a set of questions I emailed to military contractor Craft:

Was your firm hired to serve Boston police, FBI, or marathon authorities to provide security services for the recent Boston Marathon?

Operatives wearing what look like your logos and or uniforms can be seen in numerous marathon photographs, carrying large black backpacks, radiation detectors and other apparatus, why?

Can you comment on what appears to be an exploded backpack that looked like the one one of these so called operatives wearing your insignias or uniforms, was photographed wearing?

If your firm was indeed hired for the Boston Marathon, what was its purpose? Were you aware of the Tsarnaev brothers before or during the explosions at the marathon? Were you performing surveillance activities on the Tsarnaev brothers at any time?

Your written response is appreciated,