The past few years have brought foundational results in particle physics with both the Higgs discovery and the measurement of “theta 13” the last of the unknown mixing angles. With a large value of
theta 13, the neutrino community is poised to measure long baseline neutrino oscillations and look for CP violation in the neutrino sector. At short baselines, puzzles remain with hints from a number of experiments worldwide suggesting new physics. Long and short baseline accelerator neutrino experiments alike are developing precision Liquid Argon Time Projection Chamber detectors to do these electron neutrino appearance searches. This program envisioned and in progress to address these questions and develop this technology, will be described.