After the jump, you'll find two very early looks at fall network series set to film in Dallas come summer: FOX's Lonestar, which we mentioned this morning and which comes with five teaser clips, and NBC's Chase, produced by Jerry Bruckheimer. If nothing else, the former answers the question, "Whatever happened to David Keith?" But the latter raises all kinda question marks, chief among them: Is this thing set in Houston or Dallas? Because from the looks of the gives-everything-away pilot promo, it sure smells like Houston 'round this piece. I've asked a buddy, who shot second unit when they were here in March.