Well, it does happen, more so in units without a clear goal than in those with strong effective leadership that screens out those that lack capability and dedication. Fortunately, there is another side to the situation; namely those who seem to ALWAYS respond, no matter what the personal sacrifice. At some level we have all seen it, whether radio officer, communications officer, emergency coordinator, director of communications, section manager, search and rescue captain, volunteer fire chief, coordinator, pilots or communications specialist. In an emergency the most valuable responder is the person that can respond to the call out regardless of their personal situation. Key participants in Search and Rescue or Drowning Accident Recovery units are often of this type; and worth their weight in gold. From them you never hear "I don't feel like doing it" or "There isn't anyone available." When needed, they are there. Period. They lead by "doing".
While there are instances where it may seem to be impossible to respond, there are those who ALWAYS find a way to be where they are needed. Is it dedication? Or? Well, you name it. Whatever the characteristic is called it exists in more instances than we realize. Obviously, not all can achieve that level, but those who do not can back them up and support them. Their leadership helps to strengthen others inner resolve to serve when called on in times of need.