http://www.officer.com/article/article.jsp?id=18410&siteSection=1
"Threat Reported Against Prince George's County Police
Officers Request Extra Backup On Crime Scenes"
POSTED: 7:53 a.m. EST November 12, 2004
UPDATED: 8:28 a.m. EST November 12, 2004
Story by nbc4.com
ARTICLE SNIPPET: "PALMER PARK, Md. -- Police officials in Prince George's County, Md., say they are taking a very ominous threat against their officers very seriously.
Law enforcement officials say they have received tips indicating that a violent street gang known as MS-13 may be planning to ambush and kill police officers."