thanks all. forgot to mention, the barn is part of mormon row, part of grand teton national park. i took along a couple of large flashlights for the barn. they're big flashlights and look more like radar guns than flashlights. there were already 3 other photographers light painting the barn when i got there so i let them handle that part. they were using similar spotlights.
but basically, if i was by myself, i would have set the settings on the camera, added the remote cable release, locked it into machine gun mode and gone about light painting while the camera snapped away.
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here's what i have. it's cooler light, which i prefer, but you can gel it. not sure what brand the guys were using that night, but it produced a consistent amount of light on the side of the barn. some flashlights have circle patterns or radial lines running through the light.
coleman led spotlight
edit - forgot to mention, since this was 68 separate shots stacked i was able to composite the foreground from my favorite shots from the series. in other words, the tree was lit in a different shot than the barn. the guys also tried lighting the inside of the barn (i almost wet myself laughing when a couple of bats sent the guy inside screaming), but it didn't work because the windows are black plywood and not glass.
