Firebolt change history: Engines failing to start in us-east-1

Firebolt reported a major outage affecting engine provisioning and startups in us-east-1 from 2022-04-19 15:18 UTC to 2022-04-19 18:04 UTC, lasting 2 h 45 min. Customers were told not to stop or restart existing engines. Firebolt attributed the disruption to an AWS issue; after its resolution, startups and restarts were permitted again, with stuck engines expected to start shortly.