He is at training vs He is in training

Some examples from the web:

• He is at training
• If you have questions regarding our trainings feel free to call +49.631.34146-8167 or drop us a line at training(at).
• And at training, in the simulation, you saw her taken hostage.
• I'm sure you dazzled them at training.
• Here are offered various activities aimed at training, from play to psychological assistance for 250 children in need.
• He copped a blow at training yesterday, sir.
• And we are good at training our warriors to fight.
• The Commission will run a course aimed at training advisers to consumers on various financial services issues.
• It aims at training young leaders in the eastern countryside of Bethlehem District'.
• I'm sure you dazzled them at training.
• The first interdisciplinary and traveling course in Italy aimed at training experts in cultural events management.
• HCP Attendance at training events or third party conferences
• He is a strong supporter of the Akamai Foundation, which promotes mathematics education, and he oversaw the creation of the Akamai Technical Academy, an innovative program developed in-house, aimed at training diverse non-technical professionals for technical careers.
• Pursuant to USAF policy changes, AETC and CNATRA also discontinued joint training at Training Air Wing SIX with the establishment of the 479 FTG.
• I'll see you all at training tomorrow morning at 6:30.
• Our military transport will arrive at training base on lphitos in seven hours.
• I told Kate and Shane I don't want you at training either.
• I had a few beers in the afternoon, so I wasn't really at it at training.
• It's two weeks you haven't been at training.
• At training sessions, seminars and conferences about 6500 managers, engineers, teachers, workers of education and administration have been trained.
• At Training City, the teacher can fully commit into the educational and communicational process without being bothered by possible technological issues.

Some examples from the web:

• He is in training
• He is in training, sorry
• While he is in charge of training 400 photographers at the company, he also works as an active photographer, conducting on-location wedding shoots all around the world.
• He is now training in Russia on the Soyuz spacecraft that will launch him into space alongside NASA astronaut Andrew Morgan and Roscosmos astronaut Alexander Skvortsov.
• An EU Blue card holder shall have the right to remain on the territory of the Member States for as long as he or she is engaged in training activities aimed at further increasing his/her professional skills or professional re-qualification.
• He is currently involved in the training of social and health managers and he holds the position of Director of CUOA Sanità (school of health and social management based in Veneto).
• What, exactly, is he training people in?
• With Paulo (Dybala) you need only watch him in training to realise just what a great player he is.
• It also involves investing more in training and further training for individuals.
• Investment in training and re-training teachers has always been an aspect usually neglected by the national education system.
• Couple tricks I learned in training.
• I learned that word in training.
• Hell has many demons in training.
• Their difference in training methods make them rivals.
• It activates the metabolism, supports improves performance in training.
• ) The experience of competitive encounters in training.
• He was teacher in training courses concerning corporate compliance.
• For example, investing in training and professionalskills.
• Why SONARIE are a surprise even in training.
• Official story - truck flipped in training.
• Beurling demonstrated considerable skill in training.