This is the 17429th most frequent Russian word.
террористическая
Terrorist.
Here, 'террористическая' is used as an adjective to describe the type of threat being discussed.
В газетах сообщается о террористической угрозе.
Newspapers report about a terrorist threat.
In this context, 'террористическая' specifies the nature of the attack, indicating it is related to terrorism.
Местные власти приняли меры для предотвращения террористической атаки.
Local authorities took measures to prevent a terrorist attack.
Here, 'террористическая' is an adjective that qualifies 'organization,' specifying that it's associated with terrorism.