Its a well known idea that deep beneath the surface of Mars lies huge Martian military and societal centers which house the population of Mars in a state of induced cryogenic stasis. The vast array of such complexes are powered by nuclear power plants and are regulated by advanced computer technologies.
Defensive technologies have detected the probes sent from the planet earth and they have kick started defensive protocols on Mars, the first of which is to “terra form” the Martian atmosphere and restore it to it’s previous surface inhabitable state.
Once that’s accomplished, (it’ll take about 6 of our months, the Martian population will be revived and brought back to duty to man attack space craft with an aim to destroy those who sent the probes in the first place.
The “End Game” has begun!
Yeah, we’re in for now. ;’)