The AE/CF spins into two different job classifications; FCs and ETs. My husband was an FC for 10 years and our son is currently slated to be an FC however at least two of our moms thought their sons were FCs but once they got into the ATT program at GL - their sons were switched to ETs.
The initial schooling for both classifications is the same, ATT schooling at GL this provides them with basic electronics training and then they spin into their own area of specialty for more schooling.
For FCs - 60% of their enlisted time is spent at sea, I have not found how much time an ET will be at sea yet but this is what I found about the ET field...
Navy Enlisted Rating (Job) Descriptions and Qualification Factors
From Rod Powers,
Your Guide to US Military.
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Electronics Technician (ET)
ETs are responsible for electronic equipment used to send and receive messages, detect enemy planes and ships, and determine target distance. They must maintain, repair, calibrate, tune, and adjust all electronic equipment used for communications, detection and tracking, recognition and identification, navigation, and electronic countermeasures.
What They Do:
ETs operate, maintain and repair the electronic, computer and control mechanisms used in weapons systems.
Detailed List of Required Duties
Must have normal color perception. Must have normal hearing.