Welcome to Panau is the first Agency mission in Just cause 2.
Rico Rodriguez, the protagonist, has just arrived in Panau, in search of Tom Sheldon, who is his friend and mentor, who is believed to have gone rogue. Rico also learns a few minor details about the nation and it's president: Pandak "Baby" Panay. Moments after arrival, the helicopter starts getting shot at by the Flak Cannons that the United States (really The Agency) had sold to Panau.