@justicewillett
Conspiracy for Possession with Intent to Distribute doesn't require actual or constructive possession; it suffices that the deft formed an agreement for the others to possess the drugs, knew of that agreement, and voluntarily participated in it.
Aiding and Abetting on the same charge is established when deft associates with a criminal venture, ensures its occurrence, purposefully participated in the venture, and sought to make it succeed.
http://www.ca5.uscourts.gov/opinions/pub/17/17-40552-CR0.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.