But thinking about it...
Whether they know or not doesn't matter.
Both of them are professionally trained Space-time agents, for whom following orders and completing missions are above all else, naturally including their own lives.
"Fortunately, this one and only Entangled State of Time-Space Particle will finally be completely disappeared."
"Once I return to the year 2234, there will never again be a Space-Time Traveler who disregards the Space-time Law."
...
The taxi drove for more than an hour and stopped at a weed-covered farm.
The bearded driver turned his head:
"Sir, your address is here; it looks like this farm is still under construction."
The driver pointed to a few old houses in the farm and continued:
"This area is mostly private land, many rich people buy land to build villas, resorts and the like... The newspaper says, in the future Brooklyn will be developed like Manhattan, everyone is betting on investment plans."
