A viewer asks: “Exactly what method does the Mercenary Army Program use to spread this coronavirus?”

This we cannot describe in detail for security reasons and to not be too leading with information. You can envision the technological prowess of such advanced extraterrestrials and think about the problem simply of disseminating virus particles into the human environment in a way that is efficient and simple to carry out. The fact they can travel between dimensions, and travel in a cloaked manner so they are invisible, creates many potential avenues to be present but unobservable even as they have equipment to aerosolize a culture of virus to spray a mist of very, very fine particles that is undetectable by the senses as it is more akin to some dust particles in the air which people breathe constantly and are completely unaware of its presence, except on a very sunny day looking from a particular angle against a dark background will then see the air is filled with little tiny particles that are so light they move around in merest of air currents and take quite a long time to settle. So delivery of enough virus to create a small group of infected individuals is extremely simple for them to do. Minions of the Mercenary Army Program, being human, can come and go in physical form with impunity and create a very fine mist of aerosolized virus in a closed room quite easily without being detected because it only requires a small volume of material to be delivered and this only requires some basic safety measures akin to using a firearm, where you always point the gun away from yourself and not toward the self. To spread virus at a location and leave the scene immediately is simple for any human to do given a convenient apparatus and simple instructions. There are many variations on the theme to create timed deliveries, but keep in mind that humans are mobile so they can be infected at a spot, at a location of greatest convenience, and then they will move about and infect others in an ever-widening circle. So all that is needed is to get infections started in a few isolated individuals and then there will be pockets of multiple cases emerging and then it will grow from there.