This means putting aside all other priorities for the task at hand. A Traveler must be dedicated to the mission, and it must be the most important thing to them. Completing the mission is the only task that really matters. Everything you do as a Traveler should somehow further the mission's objective.
-- Do not call each other by future names. Leave the future in the past.
-- Do not use future knowledge for personal gain.
You are no longer who you were in the future. You must assume the identity of your host and acknowledge your team only as their new identity.
That's not what you're here for. Changing the past can have dire consequences to the future, and the mission is the only change that has been mandated. Refrain from putting yourself in a position where you have to take or save a life. The lives of others are not your concern, do not interfere.
This can massively interfere with the mission, and involves changes to the past that have not been approved. Refrain from creating relationships that can lead to this. Do not complicate things.
Keeping your host alive means keeping yourself alive to further the mission. Maintain good health, and avoid situations that put your host in danger. Your host's death means your own death. You were sent here for a reason, and the mission needs you.
Your team is the only group of Travelers you should be interacting with. You share a common mission, and the others have their own missions. You do not need to interact, and should refrain from doing so at all costs. Extreme emergencies may warrant an exception to this rule, but the situation must be dire indeed.
The Team leader is expected to ensure that those on his / her team follow protocol and are consistently working to further the mission.
Historian's are genetically modified to have eidetic memory. They have memorized all key historical records for the Missions benefit only.
While all team members are military trained the Tactician is specifically trained for combat scenerios and disarming bombs.
The Engineer is responsible for rebuilding or creating tech needed for Missions.
The Medic keeps his/her team alive using a mix of current day techniques and futuristic technology.
Arcadia was built out of hopes and dreams. A shangri-la, a beacon in the dark. A social experiment in the heart of the US Midwest. It might have been just that if not for Helios-685. We detected the collision course too late to try and deflect the meteor that took out the Pacific Northwest. Instead of becoming the city of hopes and dreams, Arcadia became a refugee camp for those who survived the impact long before it was ready.
234 years after impact and Arcadia is the last standing city in the US. The walls of Arcadia are built high, within those walls the government sells the false lie of safety and well being on the surface while running the Traveler program in hopes to save humanity. Not everyone thinks reaching into the past is a good idea... not everyone wants to reach into the past for altruistic reasons... and outside the city sprawls the Sectors and those who live in the Sectors know the rougher truth.
Arcadia is falling.