What is a target identified too late to be included in the deliberate targeting process?

A target identified too late to be included in the deliberate targeting process is best classified as a target of opportunity. This designation is used when a target appears suddenly and requires immediate action that falls outside of the structured, pre-planned targeting processes.

Targets of opportunity are typically time-sensitive and may require rapid engagement to capitalize on fleeting conditions, making their identification urgent. Unlike deliberate targets that have been planned for in advance, targets of opportunity are often unanticipated but present a significant tactical advantage if acted upon quickly.

In contrast, the other classifications either refer to targets that are planned in advance or specific to certain urgent situations, but do not accurately capture the essence of a target identified too late for the deliberate process. Therefore, "target of opportunity" accurately represents this scenario in military terminology.