Director-turned-deep-sea-explorer James Cameron traveled deep into the ocean, completing the first solo version of Jacques Piccard and Don Walsh’s record-breaking dive and surfacing to tell the tale Monday morning. Cameron dove 35,756 feet into the Mariana Trench in a one-man submersible, the Deepsea Challenger.

View Photo Gallery: Explorer and filmmaker James Cameron on Sunday became the first solo explorer to reach the bottom of the Mariana Trench.

Cameron tweeted from the ocean floor, “Just arrived at the ocean’s deepest pt. Hitting bottom never felt so good. Can’t wait to share what I’m seeing w/ you.”

See more of his dive on National Geographic.

More of the morning links below:

Robert Bales

— Kari Bales, wife of Robert Bales, sat down with Matt Lauer on the “Today” show and defended her husband, accused of 17 murders in Afghanistan. “I just don’t think he was involved,” she said. “I don’t know enough information. This is not him. It’s not him.” (“Today”)

— The New York Times reports that an senior Afghan police official said the 17th victim in the Afghanistan shooting spree was an unborn child. As The Washington Post reported on Friday, though, American officials ruled out the possibility that one of the slain women was pregnant. (New York Times, Washington Post)

Health care at the high court

— The health-care overhaul law will face its first day in the Supreme Court with an odd question: Can the court even make a decision about it at this time? The court will be deciding whether or not it can pass judgment on the law if its key provisions do not go into effect until 2014. The Post’s Sarah Kliff is at the courthouse tweeting along with the proceedings. (Washington Post)

North Korea moves missile

— During his visit to South Korea, President Obama had sharp words for North Korea on Sunday, warning the country not to follow through on a long-range missile test, The Post’s David Nakamura reports from Seoul. But North Korea seems to not be heeding the warning: A South Korean defense ministry official told CNN the North Korean military moved its long-range rocket to a launch pad. (CNN, Washington Post)