The crossword solution for the term 'Enter Unannounced, In A Way' is RAID. RAID stands for 'Randomly Accessible Independent Drives' and is a type of computer storage system that uses multiple hard drives to store data. RAID is often used in businesses and organizations to store large amounts of data securely and efficiently. RAID can also be used to enter a building or premises unannounced, as it allows for quick and easy access to the data stored on the drives.