Boston police spokeswoman helps to ring opening bell on New York Stock Exchange

Actor Patrick Stewart (R) and 9-year-old Vivenne Harr (C), who uses proceeds from her lemonade stand to fight slavery, ring the opening bell as Twitter co-founder Evan Williams and and Boston police officer Cheryl Fiandaca (L) look on during the Twitter Inc. IPO on the floor of the New York Stock Exchange in New York, November 7, 2013. REUTERS/Lucas Jackson (UNITED STATES - Tags: BUSINESS SCIENCE TECHNOLOGY)
Cheryl Fiandaca, left, looked on with Twitter co-founder Evan Williams as actor Patrick Stewart and 9-year-old Vivienne Harr rang the opening bell this morning.
Lucas Jackson/Reuters

Boston police spokeswoman Cheryl Fiandaca helped to ring the opening bell of the New York Stock Exchange this morning, invited by Twitter, which was launching its much-anticipated IPO, because of her department’s use of Twitter during the Boston Marathon bombings.

Twitter said Fiandaca, actor Patrick Stewart, and 9-year-old activist Vivienne Harr, were “very different people,” but had one thing in common: “they use Twitter in amazing ways.”

Twitter said the department’s tweets served as “a lifeline of communication for the entire city, and served as a defense against miscommunication” during the uncertain days after the April 15 bombings, which killed three people and wounded more than 260 others.

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