If you noticed that something was different about the Point Reyes National Seashore park rangers recently, you're right. From the SFGate, "Changes include a switch to external ballistic vest carriers that say “police federal officer” and the introduction of rank insignia, symbolic sleeve patches like stripes or stars that denote a hierarchical ranking as seen in the military. In addition, vehicles that law enforcement rangers drive will soon say “police” on the side."