It’s to transmit. Confirm safety for time

It’s 2139 and Charles Stimatra, head of the ITEDRC (International Time Exploration and Defense Research Company), has figured out a formula and machine enabling one person at one time to be transported to another time.
The glitch he has been working on is that the person can only estimate where he will be when he is transported. The closest they can guess is three kilometers within the configured destination. Seven out of twenty three men have been lost or killed for various reasons. One ended up inside a rock, another 300 feet in the air and the last got stuck in another person causing a time malfunction and creating an explosive object. The others whereabouts are unknown.
The future is a whole different matter. Since the future can always be changed, sending someone to the future could change the past.
Charles and his associates are not the only ones experimenting in time travel. He, and people like him, are called hackers, the reason there are Time Police. Time Police devote their lives to protecting the past. For example, if someone went back and killed Hitler, it could change everything. The Time Police stop these people from doing so.
Captain of the Time Police used to be Sergeant Carl Lamberg. He was one of the many that had to erase their identity and lives so they could protect the future of the human race. This brings us to the story of how Carl died. How do I know? Because I am Carl Lamberg.
“Control, I’m ready to transmit. Confirm safety for time transport.”
I let go of the intercom button and waited for the confirmation.
“This is Control, we confirm transport. You have the go ahead.”
This is my thirteenth time and I still get nervous. I reach for the bottom of my shirt to wipe my forehead but the chair starts to shake and I end up in 1642 five feet above the ground. I drop and absorb the impact with my knees.
My mission is to find a gold transport to a king and stop a hacker from robbing it.