There are three simple requirements:
- identify competency needs
- provide training or take other action to meet those needs
- evaluate the effectiveness of the action taken
Notice that training is just one option of meeting the competency needs. If I have a person that already can demonstrate the competency needed, then training is not required.
Based on what I read (and there is not really a lot to go on), it appears that training might be in order, but then again.... The main question is whether the engineers can effectively perform their tasks without the additional training.