Final answer:
The safety officer is not the only position that is always staffed in ICS applications.
Step-by-step explanation:
The statement is false. While the safety officer is an important position in Incident Command System (ICS) applications, it is not the only position that is always staffed. In ICS, there are several key positions that need to be staffed, including the Incident Commander, Public Information Officer, Liaison Officer, and Operations Section Chief, among others.