2344
But the Pentagon officials stress that as they close in on Baghdad , this becomes the real dangerous part as they enter that so - called red zone where Saddam Hussein is believed to have given his commanders authority to use chemical weapons , and that use of chemical weapons remains a real fear at the Pentagon .
 transport: close in
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:
 transport: close in