BBM. Kaine's emotional response makes sense to me given what we know of him. He seemed focused on bringing Kyron home, problem-solving and handling the stress by being a "doer" -meet with LE, formulate a strategy, come up with ideas for Kyron's room for his return, etc.
I come from a family of "doers" and have seen this pattern a lot... for instance when recently a family member was diagnosed with a fatal illness, the first thing that happened was two of us dove into researching the illness, one person started cooking meals to stock the freezer for those doing the research, another person started making calls for a second opinion and researching the best doctors in the field, etc. None of us cried at first, or allowed ourselves to break down in favor of "taking care of business". That was how we handled "the problem" of the illness, by sublimating our emotions for the short term to "solve it". Break down later.
Although rnmif, I know you have a personal reason for looking upon Kaine with suspicion and I completely respect your point of view.