It's a theme SWIM's been noticing in his visions, especially lately. Visions of wars, intense connections with historical warrior cultures, and a strong sense of invigoration and physical prowess. SWIM's gotten something similar only once from smoked spice, but it was extremely garbled and absurd--the whole alien circus quality. SWIM usually gets these sorts of visions and feelings from harmine based pharmahuasca, but it tends to be of a more primal nature. The THH seemed to put everything into a more contemporary or even futuristic quality.
SWIM's had visions of armor embedded in his skin while looking in the mirror during a strong LSD trip. The armor had either a futuristic quality or an ancient quality reminiscent a South American, Egyptian, or Persian aesthetic.
Maybe it's precognitive or maybe it's almost completely internal. WWIII? A sort of age of Ragnarok? SWIM doesn't know and doesn't care to suppose too much. Even it were precognitive, SWIM would still simply take into existential context.
Also, 15mg is the minimum that SWIM would recommend, since 8mg was closer to a standard DMT experience.