Ken Walters, the President and CEO of El Paso Employees Federal Credit Union stopped by the 600 ESPN El Paso studios on Tuesday and had his "locks" ready for week 5 of the NFL. For the second time in four weeks, Ken's lock came up just short. However, he is more confident than ever about the G-Men and two other big selections.   The 2nd annual EPEFCU 600 ESPN El Paso Lock of the Week contest featured more than 270 entries, but only 109 of them are still alive.