2609
It looks and feels like terrorism and what it requires is units to conduct forced production activities which they are prepared and do all the time but clearly when you see a tactic like this , it requires strict adherence or adjustments to your tactics , techniques and procedures to ensure that places like checkpoints are not vulnerable .
 attack: terrorism
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: declare bankruptcy, transfer ownership, marry, die, phone write, arrest jail, convict, sue, transfer money, end organization, start organization, end position, merge organization, start position, transport, charge indict, elect, attack, injure, born, extradite, release parole, sentence, demonstrate, meet, trial hearing, divorce, nominate, fine, appeal, pardon, execute, acquit 
Text: {0} 
Answer:
 attack: terrorism