What's this stick-like thing on the glass of C-130J?
It's part of the windshield anti-icing system, and is the same as on the Navy's C-130T. From the NATOPS flight manual for the T model, page 2-150:

The three windshields, the two windows on each side of the windshields, and the two lower windows in front of the pilot are NESA-type. These panels are heated by applying unregulated ac power from the left-hand ac bus to a resistance material between the layers of glass. The ac power is applied by automatic dc control systems that cycle to maintain window temperature within specific limits. A center windshield system controls heating of the three center windshields, and a side and lower system controls heating of the side and lower windows. The two systems are identical except for the amount of total ac power provided.