But we do know that this happened in a crowded train station & the terrorists were carrying rifles.
We don't know how many police were on the scene or how they were engaged in the scene as it unfolded nor do we know how the police were armed outside of them having 'guns'. Pistols? Shotguns? Rifles? And, I doubt that any of the police were trained snipers.
And, we have only this photographer's story. I'm not sure he can know everything about what every P.O. on the scene may have or may not have done.
Correct.
You are true, about a time and event.