Complex sentence: I did research works at USS Hornet and NASA/Moffett Field Museums recently, focusing on the history of military Aviation, GPS (Global Positioning System) and WW2 code-breaking, proximity fuse.
Split into simpler sentences: I did research works at USS Hornet and NASA/Moffett Field Museums recently. Concentrated on the history of military Aviation, GPS (Global Positioning System) and WW2 code-breaking, proximity fuse.