Partner Kendall Coffey was quoted in an AP News story, picked up by many news outlets, on a story regarding the federal criminal charges filed against an executive in the West Virginia Mine Blast investigation.  The article reads:

Corporations like Massey, since bought out by Virginia-based Alpha Natural Resources, are typically structured to shield their leaders from liability, the experts say. To reach the top, investigators would most likely need hard evidence to match witnesses' words.

Either that, says former U.S. Attorney Kendall Coffey of Miami, or they'll need multiple witnesses.

"If the star witness has a supporting cast," he said, "it can be a compelling basis for conviction."

 
The full article can be found here.