( ( ( Upgrading ( the sight ) ) ( by ( adding ( an ( infra-red ( pulsing ( laser ( and ( infrared illuminator ) ) ) ) ) ) ) ) ) ( , ( ( the sight ) ( ( can ( be ( ( used ( in ( conjunction ( with ( night ( vision goggles ) ) ) ) ) ) ( to ( ( illuminate targets ) ( under ( the ( darkest conditions ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (S (VP (VBG Upgrading) (NP (DT the) (NN sight)) (PP (IN by) (S (VP (VBG adding) (NP (DT an) (JJ infra-red) (NN pulsing) (NN laser) (CC and) (NN infrared) (NN illuminator))))))) (, ,) (NP (DT the) (NN sight)) (VP (MD can) (VP (VB be) (VP (VBN used) (PP (IN in) (NP (NP (NN conjunction)) (PP (IN with) (NP (NN night) (NN vision) (NNS goggles))))) (S (VP (TO to) (VP (VB illuminate) (NP (NNS targets)) (PP (IN under) (NP (DT the) (JJ darkest) (NNS conditions))))))))) (. .)))
Upgrading the sight by adding an infra-red pulsing laser and infrared illuminator, the sight can be used in conjunction with night vision goggles to illuminate targets under the darkest conditions.
(ROOT (S (NP (PRP You)) (VP (MD can) (VP (VB use) (NP (NN night) (NNS goggles)) (S (VP (TO to) (VP (VB see) (NP (JJ infrared) (NN light))))))) (. .)))