NATO troops killed in Afghan 'insider attack'

What is a sentence that would be (on a scale from 0 to 5) a 4 out of 5 in terms of textual similarity to the above sentence?
US Troops Killed in Afghan Insider Attack

California wildfire grows but officials say fire crews making progress

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California wildfire: 1,900 on the lines as firefighters labor to limit damage (+video)

The bailout was bigger than TARP This title is misleading.

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The bailout was bigger than TARP Bloomberg news.

EU to train Mali army to fight northern Islamist militants

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Fight for Mali Town Reflects Islamist Tactics