What indicates the end of IEM status on a schedule?

The indication that marks the end of IEM (In-Service Evaluation Monitoring) status on a schedule is represented by a vertical red line. This visual cue signifies a transition point, alerting supervisors and personnel that the specific condition and evaluation phase underpinning the IEM status has concluded.

In operational contexts, a red line often denotes the end of a warning period or signifies that a certain operational protocol, such as IEM, has officially reached its conclusion based on predetermined criteria. This helps in quickly identifying the status of operational activities and allows for planning the next steps or returning to normal operations.

Other choices, while plausible in the context of scheduling or marking events, do not hold the same specific implication regarding the termination of IEM status. The vertical green line, for example, may usually indicate a positive condition or readiness rather than the end of a monitoring phase.