Our ICE processing centers are highly rated by national accreditation organizations and have provided high-quality and culturally responsive services for over 30 years under both Democratic and Republican administrations.
The federal government has also put in place Title 42 public health restrictions at the Southwest border which result in the immediate removal of single adults apprehended by border patrol.
These mitigation initiatives have included a focus on increasing testing capabilities, including investing approximately $2 million to acquire 45 Abbott Rapid COVID-19 devices and testing kits.
We also installed bi-polar ionization air purification system at select secure service facilities, representing a company investment of approximately $3.7 million.
We are focused on debt reduction and deleveraging.
In 2020, we reduced our net debt by approximately $100 million.
During the first quarter, we reduced net debt by approximately $57 million and we've set a goal of paying down between $125 million and $150 million in net debt in 2021.
In the first quarter, we sold our interest in Talbot Hall, New Jersey reentry center with net proceeds of over $13 million.
In February of 2021, we issued $230 million and 6.5% exchangeable senior notes due 2026 in a private offering.
We used a portion of the net proceeds to redeem the outstanding amount of $194 million of senior notes due 2022 and use the remaining net proceeds to pay related transaction fees and expenses for general corporate purposes.
Today, we reported first-quarter revenues approximately $576 million and net income attributable to GEO of $50.5 million.
Our first-quarter results include a $13 million pre-tax gain on real estate assets and a $3 million pre-tax gain on the extinguishment of debt.
Excluding these gains, we reported first-quarter adjusted net income of $0.28 per diluted share.
We also reported first-quarter AFFO of $0.60 per diluted share.
We expect full-year 2021 net income attributable to GEO to be in a range of $141 million to $150 million on a full-year 2021 revenues of approximately $2.23 billion to $2.25 billion.
We expect full-year 2021 adjusted net income to be in a range of $1.02 to $1.10 per diluted share.
We also expect full-year 2021 AFFO to be in a range of $2.23 to $2.31 per diluted share.
We expect full-year 2021 adjusted EBITDA to be in a range of $395 million to $406 million.
Additionally, the BOP has decided to discontinue its contract for the county-owned and managed Reeves County Detention Center 1 and 2 effective this month.
For the second quarter of 2021, we expect net income attributable to GEO to be in a range of $35 million to $38 million on quarterly revenues of $558 million to $563 million.
We expect second quarter 2021 AFFO to be between $0.57 and $0.59 per diluted share.
At the end of the first quarter, we had approximately $290 million in cash on hand.
More recently, we drew down an additional $170 million on our revolving credit facility, resulting in approximately $460 million in cash on hand and leaving approximately $14 million in additional borrowing capacity under our revolver.
As part of this effort, we refinanced the outstanding amount of $194 million of our senior unsecured notes due 2022 earlier this year by issuing $230 million in new 6.5% exchangeable senior unsecured notes due in 2026.
With respect to our capital expenditures, as we had previously announced, we have canceled approximately $35 million in capex previously planned for 2021.
We now expect total capex in 2021 to be $69 million, including $14 million for maintenance capex.
In 2020, we paid down approximately $100 million in debt.
During the first quarter of the year, we paid down approximately $57 million in net debt, which represents substantial progress toward our previously articulated objective of reducing net debt by $125 million to $150 million in 2021.
During the first quarter, we sold our interest in the Talbot Hall reentry facility in New Jersey, which resulted in net proceeds to GEO of approximately $13 million.
To date, we have administered over 100,000 COVID tests to those in our care across our secure services facilities.
To date, over 18,000 vaccinations have been administered at our secure services facilities.
The BOP has also decided to discontinue its contract for the county-owned and managed Reeves County Detention Center 1 and 2, effective this month.
And our current expectation is that those two contracts will not be renewed by the BOP.
We were notified by the U.S. Marshals that the agency would not renew the contract in our company-owned Queens detention facility in New York, which expired on March 31.
All those entrusted in our care provided culturally sensitive meals approved by registered dietitian, clothing, 24/7 access to healthcare services and full access to telephone and legal services.
We have provided these high-quality professional services for over 30 years under Democratic and Republican administrations.
I'd like to briefly update you on our GEO care business unit.
During 2020, GEO allocated $1.7 million to address basic community needs of post-release participants such as transitional housing, treatment, transportation, clothing, food, education and job placement assistance.
Throughout the year, our post-release support team helped more than 3,600 individuals returning to their communities.
We believe that it provides a proven successful model on how the 2.2 million people in the criminal justice system can be better served and changing how they live their lives.
We've provided high-quality professional services for over 30 years under both Democratic and Republican administrations and under legislative branches controlled by both parties.
On May 15, Blake will be succeeded by James Black, who has 23 years of service with GEO.

Summary:
We are focused on debt reduction and deleveraging.
We also reported first-quarter AFFO of $0.60 per diluted share.
We expect full-year 2021 net income attributable to GEO to be in a range of $141 million to $150 million on a full-year 2021 revenues of approximately $2.23 billion to $2.25 billion.
We also expect full-year 2021 AFFO to be in a range of $2.23 to $2.31 per diluted share.
For the second quarter of 2021, we expect net income attributable to GEO to be in a range of $35 million to $38 million on quarterly revenues of $558 million to $563 million.
We expect second quarter 2021 AFFO to be between $0.57 and $0.59 per diluted share.
And our current expectation is that those two contracts will not be renewed by the BOP.
We were notified by the U.S. Marshals that the agency would not renew the contract in our company-owned Queens detention facility in New York, which expired on March 31.
I'd like to briefly update you on our GEO care business unit.