Among other limits, soldiers legally can detain only people caught in the act of a crime as they check suspicious cars, rummage through trash cans and gather intelligence from neighbors.

其它的限制包括，士兵的合法行为只能是在检查可疑车辆、搜寻垃圾桶、以及向邻人们搜集情报时拘留正在从事犯罪行为的人员。

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Nigerians are increasingly questioning the police and military response, one that relies more on labor-intensive check points rather than intelligence operations that could provide tips on weapons or the composition of the group.

WSJ: Attacks in Nigeria Kill at Least 143

When you have some piece of intelligence like this, you check whether this person had a visa, and if had been issued a visa, you make sure that he doesn't enter the country without serious security checks, additional screening and perhaps the revocation of the visa itself.

CNN: Washington overreacting to air scare

Dayton said his team would be better prepared to respond quickly to intelligence reports and would no longer simply check off a list of suspect sites.

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