josh mankiewicz: as a military man, john heckel finds solace on old battlefields. the past is always present there, >>> as a military ouman, john finds solace on old battlefields where the past is always present but for john, no peace could be found as long as his wife's killer walked free. >> i would always say, where are we, how close are we to getting him arrested? >> and the police would say? >> the dna won't go forward. >> it's more like, we need more. >> investigators went looking for more, and dug deep looking for kathy. even so, january 28th, 2015, a grand jury indicted lloyd groves for murder, largely on the strength of the same evidence that had been in the files all along. >> it was literally like television. we got there early, 5:00 and sat up. we jumped out and put the handcuffs on him and said, you are under arrest. >> did he say anything? >> he told his son he needed to get a ride to work. it didn't faze him. >> the lloyd is arrested. >> in her thankfulness that we were getting somewhere, we still have a long way to go. >> in many ways, the arrest of