Must be able to stand; use hands to finger, handle, or feel; walk; reach with hands and arms; stoop, kneel, crouch, or crawl; and talk or hear continuously for 8-10 hours per day and occasionally on a sixth working day. Performs all mechanical assembly operations of sub-assemblies and package assembly, all sensitive and very detailed assembly operations, some electrical, instrumentation and control elements of the package, and functional test set up including in-process quality checks and tests.? .