Authorities accused the 30-year-old Marine of having a live 25mm explosive round in his checked bag at the Palm Springs International Airport.
A 19-year-old man has been convicted not only building explosives, but for also plotting to attack multiple events in the Philadelphia region.
A New York man has been indicted on multiple counts after authorities say he built several improvised explosive devices with chemicals he ordered online.
Investigators in Chester County served another search warrant following the arrest of an armed man at a 'No Kings' rally last month.
Authorities in Chester County are still working to determine the intentions of a man found with a cache of weapons and explosives.
Police say what appears to have started as a science project resulted in the FBI and New Jersey state police discovering a bomb lab in the basement of one teen's Moorestown home.