Transformers 4 may be finished in Chicago but production continues. Currently
near Elma, Washington, the production had put out an "urgent casting call" for extras for filming on Wednesday and Thursday. The call was seeking 18+ male and female "clean cut, athletic, military, business types." If in the Elma area, it might not be too late
to apply. Sadly not a whole lot of info to gleam from that as many of the extra notices had similar descriptions. Thanks to Wynton R. for the link.