Some of the security measures in place for the 118th running of the Boston Marathon on Monday:
- More than 3,500 police officers - double the usual number - will be out along the 26.2-mile course, including undercover officers with special training.
- At least 100 strategically positioned video cameras will monitor the crowds.
- Spectators are asked to carry their belongings in clear plastic bags instead of backpacks.
- Spectators who do bring backpacks will be subject to a search.
- Coolers, quilts and other bulky items are discouraged.
- Security will be especially tight close to the finish line.
- More than 50 observation points will be set up near the finish line to monitor the crowd.
- Unregistered runners known as bandits won’t be allowed to participate.
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