At the risk of sounding like the boy who cried wolf, I think Sprint has finally lit up the tower at Akers and 198 in Visalia with LTE. I thought they were working on them last January, but as Oedipus pointed out, Sprint's towers were second from the bottom.
I've seen a sky trak there the last couple weeks, and I can confirm that there are new panels on that rack, and today I am on 4G. I took some Sensorly tracks and speed tests. It's certainly not Spark but still better than 3G.