Amazon has suspended its contract with cargo carrier 21 Air following a crash at Miami International Airport that killed five people, raising fresh questions about safety oversight in the fast-growing logistics networks that power the company's delivery empire. The plane overshot the runway during the incident, and federal investigators are now examining what went wrong. The suspension comes as scrutiny grows over Amazon's reliance on third-party contractors to move goods quickly and cheaply, a model critics say can create pressure to cut corners on maintenance, training, and safety protocols. While Amazon's decision to pause the partnership signals some accountability, advocates for aviation safety argue that voluntary corporate action is no substitute for rigorous federal regulation of contracted carriers. The tragedy underscores broader concerns about the human cost embedded in the infrastructure behind rapid e-commerce delivery, and whether companies like Amazon adequately vet the safety records of the operators they depend on. Investigators have not yet released findings on the cause of the crash, but the incident is likely to intensify calls for stronger oversight of cargo aviation partnerships nationwide.