The bond between a handler and their K-9 can only be built over time . It 's a closeness that becomes intrinsic , with the dedication of the dog built not on money or benefit , but love . So having to say goodbye is always going to be heartbreaking . Such was the sad situation faced by the 802nd Security Forces Squadron at Joint Base San Antonio-Lackland in Texas recently , when a beloved member of their unit , MWD Daysi , had to be euthanized for an aggressive form of cancer and a malignant tumor . Scroll down for video . Heartbroken : Senior Airman Chelsea LaFever says goodbye to MWD Daysi , who had to be euthanized at Joint Base San Antonio-Lackland in Texas due to an aggressive form of cancer . Emotional : Sgt . Paul Olmos , the military working dog handler assigned MWD Daysi since last year , plays with his partner one last time before she was euthanized on February 27 , 2015 . Daysi was certified to join the narcotics detection team in January 2014 , the Air Education and Training Command released this week . She had never had a handler before , and her partner with Sgt . Paul Olmos , had never had his own dog . 'Daysi and Olmos were an ideal team pairing , ' said Tech . Sgt . Kevin Nelson , 802nd SFS kennel master . 'Their relationship is immense because this was their first experience as a MWD team . ' Olmos would spend all of his free time with his charge . ' I 'm single and I do n't have immediate family here , so I 'd come on the weekends just to visit her and take her on runs , ' Olmos said . ' I could n't even tell you how much time we 've spent together . ' Together they participated in the Texas Toughest Dog competition . However in January this year , trainers noticed something was wrong with Daysi 's left leg . Sick : Daysi had an aggressive form of cancer and a malignant tumor and could not be operated on . An initial check-up did n't show anything abnormal . However a follow-up evaluation detected a tumor . Daysi 's certification was subsequently canceled and she was taken in for treatment . The tumor was found to be pushing on a nerve and causing her pain . But due to the location , doctors were unable to operate , which would cause the cancer to spread to the rest of her body . 'The news of Daysi 's declining health hit us hard ; this sort of news always does , ' Tech . Sgt . Kevin Nelson said . 'Euthanasia of MWDs is a last resort and we try to approach every option available before it comes to that , ' 'Most of our dogs get adopted out or continue on with their service in a civilian police department . ' Final goodbye : Military members line up and salute MWD Daysi as she is walked into a veterinary clinic to be put down by her partner , Sgt . Paul Olmos . On February 27 , all of those who had worked with MWD Daysi lined up outside the veterinary clinic . A police procession blared sirens that resonated throughout the base . The officers then saluted as Daysi was lead into the facility to be put down . 'These dogs are our brothers and sisters in arms as well , ' Nelson added . While highly-emotional , no one seemed to be more affected than Sgt . Olmos . 'Through all the training we 've done together and the long 12 to14 hour days ; it was just me and her , ' he said . 'She 's my partner . '
WMD Daysi joined the narcotics detection team at the Joint Base San Antonio-Lackland in Texas in February 27 . In January she developed problems with her leg . It turned out to be an aggressive cancer and malignant . She was euthanized at the base on January 2014 . Military members lined up and saluted as she was walked into the clinic to be put down by her partner , Sgt . Paul Olmos .