The aliens, and to a lesser extent ADVENT, have long relied on the otherworldly element known as Elerium to power everything from their weapons systems to the UFOs themselves. It may take some time but furthering our understanding of this material could greatly advanced our own weapon and armor development projects.
Having completed our analysis of the substance tentatively referred to as "Elerium 115", it's clear that this material is unlike any other naturally occurring element on Earth. Presumably the aliens extracted their undoubtedly extensive stores of Elerium from another planet, but that is beyond my capacity to surmise. What I do know with certainty is that this element is incredibly reactive when exposed to high energy particle fields, providing a source of nearly limitless power that defies all known efficiency standards. Unfortunately, I see no means of replicating or synthesizing this substances with the resources available to us on Earth. The materials we recover from the aliens themselves will likely constitute the entirety of our available stockpile. The Commander will have to be careful in choosing how to allocate these precious resources. R.Tygan