Maybe you're the type who's cursed his inability to post real-time selfies on the trail. Or maybe you're more in the unplugged camp. Either way, Mt. Rainier National Park officials want to know your thoughts on a proposal to add a wireless technology facility to the park's popular Paradise area. The plan would provide year-round cell phone coverage for Verizon, T-Mobile, and AT&T customers. Weigh in before July 19.