One of the problems with the Operation Rimfire adventure is that there isn't enough detailed information on the history of Algol. Presumably the authors expected that everyone running the adventure would own the core rulebook, which is fair enough. However, there are some gaps in the Mekton Zeta entry on Algol, and some of the dates don't match up to those given in the adventure. What does the acronym KAAVAAK stand for? Did the Mekton War begin in 1502 (Mekton Zeta) or 1503 (Operation Rimfire)?
What I've done is pulled out all the information I can from the adventure and collate it here for easy reference and use. I'm curious to see how it matches up with the information in the previous edition's core rulebook, but if all you have is the current edition, this should stand you in good stead.
1500 - Korvax becomes emperor of Karga with the help of Arkon Verian
1502 - Lady Ariel is born
1503 - Kargans make their first moon landing at Dion 1; Karga begins the Mekton War with the destruction of the Elaran arcopolis of Fiora on the 21st day of the 10th month
1504 - Princess Ymri, Kerion, Doctor Tal and others steal mekton designs from Verian's research facility
1505 - Elara has sufficient mektons to push the Kargan forces back, starting the Archipelago War
1510 - both the Axis and the Sharafin rebels are active in Karga
1512 - Elarans make their first moon landing at Dion 1
1513 - Cedric Artis begins active service in the EMF
1515 - Tharis Tremaine begins active service in the EMF
1516 - the Unified Science Alliance (USA) establishes a moon station at Dion 1 as a neutral research facility; Queen Ymri II succeeds her father as monarch of Elara
1518 - snowfalls at the equator ends the Archipelago War; the Murians lower their force field; the Unified Algol Alliance (UAA) is formed; the USA hand over the Dion 1 moon station to the UAA; the construction of the solar arrays begins
1519 - the Axis threaten to destroy the solar arrays unless Emperor Korvax is tried and executed as a war criminal; the UAA initiates Operation Overwatch to guard the solar arrays and other space facilities against the Axis
1520 - Fireflight Squadron is assembled by Operation Overwatch
EMF - Elaran armed forces, acronym may stand for Elaran Mekton Force.
EMFMI - Elaran military intelligence organisation, acronym may stand for Elaran Mekton Force Military Intelligence.
KAAVAAK - Kargan military intelligence organisation, no idea what the acronym stands for.
Sharafin Rebels - still fighting for independence in the Sharafin Mountains of Karga after at least ten years.