2PE and FPE

FPE

Fire Protection Engineering

FPE Floating Point Exception

FPE Fire Protection Engineer

FPE Free Primary Education

FPE Final Prediction Error

FPE Foundation for the Philippine Environment

FPE Fokker-Planck Equation

FPE Floating Point Emulator

FPE Fantastic Plastic Elastic

FPE Food Processing Equipment

FPE FrontPage Server Extensions

FPE Federation of Public Employees

FPE Federal Pacific Electric Company

FPE Floating Point Engine

FPE Free People of Earth

FPE Foot-Pounds of Energy

FPE Focal Plane Electronics

FPE Fermented Plant Extract

FPE First Priority Enterprise

FPE French Postural Experiment

FPE Front-end Processing Environment

FPE Force Protection Experiment

FPE Fixed-Price Escalation

FPE Faith Promoting Experience

FPE Fractal Patch Element

FPE Flight Parameter Estimation

FPE Functional Performance Element

FPE Fairport, Painesville, & Eastern Railway Company

FPE Fixed Price Engagement

2PE Two-Photon Excitation

Unless you give some kind of context, it's impossible to be specific.

2PE is where I go after four or five cans of beer.

FPE? Dunno.