Snip:
The undercover employee also opened a backpack, which contained pieces of pipe with end caps attached in the manner of pipe bombs, along with cord-like safety fuse, stating, these are bombs right here. The undercover employee explained that the duct tape Hester provided would be used to tape the bombs together, which Hester acknowledged, and that the nails Hester provided would cut peoples heads off. Hester responded: Oh yeah. I know, indicating that he understood the nails were to be used as shrapnel for bombs.
The undercover employee stated that they had more backpacks that they were going to put in different locations. Hester acknowledged that he understood, and stated that they had to be smarter than the Boston Marathon bombers. Hester again confirmed that he was down, the affidavit says, and that he understood they had to lay low and act in a manner to avoid detection.
Threat Matrix, 2017