Turns out it's also available in other formats, including Kindle's mobi. http://www.ebook3000.com/ipad-iphone/Unintended-Consequences---John-Ross_127434.html
additional info:
Authorities identified the victims late Sunday as Greg Griego, 51, his wife Sara Griego, 40, and three of their children: a 9-year-old boy, Zephania Griego, and daughters Jael Griego, 5, and Angelina Griego, 2. The suspect was identified as Nehemiah Griego.
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http://news.yahoo.com/nm-shooting-victims-chaplain-wife-3-kids-043034960.html