In 2350 Bjorn was born in Hafnarfjordur, Iceland to Rollo and Ingred Tyrson. His town was stepped in tradition and kind of cut off from the modern world. The people in his town very much believed and worshiped the Old Norse Gods. As Bjorn got older he grew very large and used his size to complete in Viking games. Where they would have strongman competitions. He enjoyed this time very much and loved to compete.
As people from all over came to compete in these games Bjorn started to learn more and more about the world and the universe. This very much interested him because since a little boy his dream was to leave Midguard and find the Land of the Gods, Asgard. When he learned of space travel he knew this maybe his opportunity.
In 2367 Bjorn joined Starfleet by enrolling in Starfleet Academy. As a first year cadet word of what was going on above them in the Battle of Wolf 359 made Bjorn sure that he was taking the paths layed out by the gods. He concentrated he studies in Security/Tactical. These classes came very easy to a man of his size and strength.
2371 finds Bjorn graduating from the Academy and taking a post as a Security officer on the USS Eclipse. This was a good learning post and got him out into the stars. The Eclipse was recalled to Sector 001 in 2373 to defend against a Borg Incursion in the Sol System. Many lives where lost that day and the Eclipse suffered large amounts of damage. So much so that the surviving crew where transferred to the USS Lafayette and redeployed to help the forces fighting around Bajor.
After the Battle of Sector 001 Bjorn was moved up to Assistant Chief of Security/Tactical. He would hold this job through out the Dominion War with distinction. After the war Bjorn is named Chief of Security and Tactical and continued on the Lafayette until 2389 when he is reassigned to the USS Proxima
Tyrson is the Chief Intelligence Officer