Why did the 4-5 fire fighters go to the bus (tail section) without a handline?

4-5消防人员走向大巴士（飞机尾部）而没有携带手持水？

The four personnel on the handline would have been better used with two on the handline and two doing rescue and relocating the injured away from the dangers.

四元消防人员手持喷头的情况，可以更好地修正手持喷头，另从险境中将伤员救出。