I see that you are interested in becoming a 'forest ranger'. This can be a difficult job to land in some regions, but very rewarding. You may want to consider doing some volunteer work for a near by park that you like. This could be a State, National or Local park that is near where you live. The experience will be great for your career goal, and can be a lot of fun!

One other thing to think about. Not all 'Park Rangers' are law enforcement. Other major categories are 'Interpretation' and 'Maintenance'. Interpreters (that is natural and cultural interpretation not language) are the teachers and tours givers and such. These often do not have the same two year citizen requirements as law enforcement.

Best of Luck!