[Orca Network] Orcas - Biggs T419, T420, T421 southbound (Alison Evangelista) (edited to add IDs)
{"aggregatorChain": "Whale Alert / Maplify (WASEAK) > Orca Network", "travelDirection": "south", "aggregatorSource": "Orca Network", "unvalidatedIdentifiers": ["T419", "T420", "T421"]}