As CBS points out, investigators are worried that whoever is behind these bombings has gone from "targeting a specific individual" to "I just want to kill someone."
"That’s concerning," said Clint McNear, a former Garland detective who now operates McNear Consulting.
The shift from a bomb triggered by motion to a tripwire shows sophistication, according to McNear.
"They’ve done it repeatedly without harming themselves, they’re displaying that they have some knowledge," said McNear.
Having built and transported at least four bombs, McNear believes it is likely not someone who is learning as they go.
"My mind was racing this morning. Is it a former oil-field worker that’s extremely familiar with explosive devices?" questioned McNear. "Is it a former military EOD? Former fire/police officer that’s got training in bombs?"
But while the investigation is ongoing, McNear warned the public not to panic.
"I would beg the public to not panic, to be prepared, not paranoid and if you see something, you have to report it," said McNear.
"I hope he inadvertently becomes a suicide bomber in his garage trying to build his next device because he certainly is a dangerous person," said McNear.
But considering their ostensible level of sophistication, this outcome seems unlikely.
The FBI told CBS that it's "more than possible" the blast is linked to the recent ones in Austin before law enforcement sources confirmed it.
.@CBSNews reports the FBI says it's "'more than possible"' that the package that exploded at a FedEx facility in Schertz, which was bound for Austin, is connected to the #AustinBombings
— Ashley Sutton (@AshSuttonSA) March 20, 2018
The explosion occurred at around 12:30 am Tuesday morning (local time). The bomb, which contained nails and shrapnel, wounded at least one woman, FBI Special Agent Michelle Lee told reporters.https://archive.fo/BQIRmhttps://www.zerohedge.com/news/2018-03-20/package-bound-austin-explodes-texas-fedex-warehouse