Summary

Completing expeditions in Vanguard spawns investigations in known space (HS/LS/non-sov NS) in EVE Online.

Systems with active investigation spawn combat, hacking and salvaging sites. The hacking sites have to be probed down.

AEGIS Squalls are spawning in investigation systems. Combat probing them and following them around may reveal additional locations for investigation sites with better loot (and maybe harder combat?).

Running any investigation related site adds influence in the system. Once influence is at 100% a Nemesis combat site spawns. Completing the site removes the investigation and all of its sites from the system.