Fantastic writing (Full Disclosure: using uBlock origin I had none of the ad distractions that some mentioned).<p>Why this case is so puzzling is that it mixes the seemingly pro level like hit with the unpredictability of the location(it took a few coincidences for the car to get up that hill) and seemingly unneeded extra kills.<p>I was thinking that one explanation would be that someone(individual or state) outsources the killing of the engineer or the cyclist (or both).<p>This hired gun is a pro but also a loose cannon who enjoys killing just because. So he is no Golgo13.<p>The other explanation is that it is a completely nonsensical crime, ie someone with military training camped up in those hills with the intention of killing whoever came up there and then left the area. This seems so unbelievable yet it is possible.